Bump postgresql to 42.7.3

[PeterSuna]

Bump PostgreSQL from version 42.6.0 -> 42.6.2, resolves critical vulnerability:
https://nvd.nist.gov/vuln/detail/CVE-2024-1597

Release notes:
https://jdbc.postgresql.org/changelogs/2024-02-21-42.6.1-release/
https://jdbc.postgresql.org/changelogs/2024-03-13-42.6.2-release/

[ihrasko]

There is already 42.6.2 :).

[PeterSuna]

There is already 42.6.2 :).

Done

[github-actions]

Test Results

90 tests  ±0   81 ✅ ±0   1m 26s ⏱️ -1s
50 suites ±0    9 💤 ±0 
50 files   ±0    0 ❌ ±0 

Results for commit 1f71609. ± Comparison against base commit d83c327.

[grgrzybek]

There's 42.7.3 available.