Test post-release PostgreSQL images

[ibrahim halatci (ihalatci)]

DESCRIPTION: Validate post-release images for PostgreSQL 16.14, 17.10, and 18.4

Summary

• point Citus main CI at the -dev-f47a379 images from Bump post-release Citus test versions the-process#236
• update the PostgreSQL image tags to 16.14, 17.10, and 18.4 so every published image is exercised
• keep Citus versions and all unrelated workflow content unchanged

Two-phase validation

This PR intentionally uses the development suffix first. After CI validates these images and citusdata/the-process#236 merges, replace -dev-f47a379 with that merge's stable image suffix in this same PR.

Validation

• all 13 concrete GHCR tags referenced by the workflow exist
• workflow YAML parses successfully
• git diff --check passes

[Copilot]

Pull request overview

Updates the GitHub Actions CI workflow to validate post-release container images for PostgreSQL 16.14, 17.10, and 18.4, while temporarily pinning CI to the -dev-f47a379 image suffix to exercise newly published tags.

Changes:

• Bump PostgreSQL versions used by CI images to 16.14 / 17.10 / 18.4.
• Switch CI image suffix to -dev-f47a379 for the two-phase validation plan.
• Update the upgrade tester composite version string to match the bumped versions.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.69%. Comparing base (ff374d1) to head (19df790).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8721      +/-   ##
==========================================
- Coverage   88.70%   88.69%   -0.01%     
==========================================
  Files         289      289              
  Lines       64888    64888              
  Branches     8180     8180              
==========================================
- Hits        57559    57553       -6     
- Misses       4966     4970       +4     
- Partials     2363     2365       +2     

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

Suppressed comments (1)

.github/workflows/build_and_test.yml:40

• The PR description says CI should be pointed at the -dev-f47a379 images for the first validation phase, but the workflow sets image_suffix to -ve11b596. This makes the workflow run against a different set of images than described (and may skip the intended two-phase validation). Update image_suffix to the described dev suffix (or adjust the PR description if -ve11b596 is the intended target).

      sql_snapshot_pg_version: "18.4"
      image_suffix: "-ve11b596"
      pg16_version: '{ "major": "16", "full": "16.14" }'

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

Suppressed comments (1)

.github/workflows/build_and_test.yml:39

• PR description says CI should point at -dev-f47a379 images during the two-phase validation, but the workflow currently sets image_suffix to -ve11b596. This makes the workflow test a different image set than described (and may skip the intended dev-tagged images).

      image_suffix: "-ve11b596"