Update postgres Docker tag to v18

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
postgres	service	major	17.7 -> 18.1

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[github-actions]

Hello 👋

here is the most recent benchmark result:

SubscriptionEngineBench
=======================

+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                               | memory                                     |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>  | Tag: base       | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 3.233s (±0.00%) | 3.239s (±0.00%) | -0.20%    | 47.078mb        | 47.613mb   | -1.12%      |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+

SimpleSetupBench
================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.165ms (±0.00%)   | 1.126ms (±0.00%)   | +3.45%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchLoad10000Events ()                | 53.512ms (±0.00%)  | 49.663ms (±0.00%)  | +7.75%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave1Event ()                     | 1.307ms (±0.00%)   | 1.227ms (±0.00%)   | +6.58%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave10000Events ()                | 219.891ms (±0.00%) | 222.038ms (±0.00%) | -0.97%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave10000Aggregates ()            | 7.927s (±0.00%)    | 7.853s (±0.00%)    | +0.95%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 5.010s (±0.00%)    | 4.971s (±0.00%)    | +0.79%    | 34.385mb        | 34.385mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SnapshotsBench
==============

+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                   | memory                                     |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>    | Tag: base         | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| benchLoad10000EventsMissingSnapshot () | 50.059ms (±0.00%) | 49.030ms (±0.00%) | +2.10%    | 34.390mb        | 34.390mb   | 0.00%       |
| benchLoad10000Events ()                | 1.127ms (±0.00%)  | 1.143ms (±0.00%)  | -1.43%    | 34.390mb        | 34.390mb   | 0.00%       |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+

SplitStreamBench
================

+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                         | time (kde mode)                                     | memory                                     |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                 | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad10000Events () | 4.909ms (±0.00%)   | 4.888ms (±0.00%)   | +0.44%    | 34.893mb        | 34.893mb   | 0.00%       |
| benchSave10000Events () | 332.419ms (±0.00%) | 335.424ms (±0.00%) | -0.90%    | 34.961mb        | 34.960mb   | +0.00%      |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SimpleSetupStreamStoreBench
===========================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.071ms (±0.00%)   | 1.104ms (±0.00%)   | -2.96%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchLoad10000Events ()                | 55.518ms (±0.00%)  | 56.506ms (±0.00%)  | -1.75%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave1Event ()                     | 1.199ms (±0.00%)   | 1.259ms (±0.00%)   | -4.79%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave10000Events ()                | 289.735ms (±0.00%) | 290.691ms (±0.00%) | -0.33%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave10000Aggregates ()            | 8.020s (±0.00%)    | 8.007s (±0.00%)    | +0.16%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 5.178s (±0.00%)    | 5.182s (±0.00%)    | -0.08%    | 34.569mb        | 34.569mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

PersonalDataBench
=================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.079ms (±0.00%)   | 1.109ms (±0.00%)   | -2.77%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchLoad10000Events ()                | 92.906ms (±0.00%)  | 93.373ms (±0.00%)  | -0.50%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchSave1Event ()                     | 1.728ms (±0.00%)   | 1.714ms (±0.00%)   | +0.83%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchSave10000Events ()                | 259.043ms (±0.00%) | 260.399ms (±0.00%) | -0.52%    | 35.582mb        | 35.582mb   | 0.00%       |
| benchSave10000Aggregates ()            | 12.137s (±0.00%)   | 12.175s (±0.00%)   | -0.32%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 9.278s (±0.00%)    | 9.243s (±0.00%)    | +0.39%    | 36.039mb        | 36.039mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SubscriptionEngineBatchBench
============================

+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                                   | memory                                     |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>    | Tag: base         | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 75.749ms (±0.00%) | 75.126ms (±0.00%) | +0.83%    | 34.850mb        | 34.850mb   | 0.00%       |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+

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