Postgres end-of-life

[nutjob4life]

The version of Postgres used by KSDB will reach end-of-life in November 2026.

KSDB—if we continue to need it—will need to be upgraded to use a newer version of Postgres.

Alternatively—and perhaps preferably—KSDB should be Dockerized and moved to edrn-docker, enabling us to take care of our own versions of Postgres and not remain beholden to the sysadmins' requirements (or at least, less so).