[fix][sec] Upgrade Spring to 6.2.12 to remediate CVE-2025-22233 and CVE-2025-41249

[guptas6est]

Fixes #xyz

Main Issue: #xyz

PIP: #xyz

Motivation

Upgrade Spring Framework to version 6.2.11 to address security vulnerabilities CVE-2025-22233 and CVE-2025-41249, ensuring the project uses a secure and patched version.

Modifications

• Updated spring.version from 6.1.14 → 6.2.12 in pom.xml.

Verifying this change

• Make sure that the change passes the CI checks.

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

(or)

This change is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

(example:)

• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository:

[guptas6est]

Hi @lhotari, thank you for the review!
I’ll update both my PRs and push the suggested changes shortly.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.22%. Comparing base (ebfff58) to head (a748d41).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #24903      +/-   ##
============================================
- Coverage     74.31%   74.22%   -0.09%     
+ Complexity    33843    33457     -386     
============================================
  Files          1913     1913              
  Lines        149325   149328       +3     
  Branches      17332    17334       +2     
============================================
- Hits         110966   110838     -128     
- Misses        29503    29623     +120     
- Partials       8856     8867      +11     

Flag	Coverage Δ
inttests	26.37% <ø> (+0.01%)	⬆️
systests	22.79% <ø> (-0.14%)	⬇️
unittests	73.76% <ø> (-0.06%)	⬇️

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see 85 files with indirect coverage changes

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