ci: use ghcr image mirrors for postgres and redis services

[sl0thentr0py]

Replaces Docker Hub image references in CI with their ghcr.io/getsentry/image-mirror-* equivalents, consistent with how getsentry/sentry pulls service containers.

Changes

• postgres → ghcr.io/getsentry/image-mirror-library-postgres:17-alpine
• redis → ghcr.io/getsentry/image-mirror-library-redis:7.0.8-bullseye

mysql and docker:dind are not available in the getsentry mirror (getsentry/image-mirror) so those are left unchanged.

The change is made in the Jinja template (scripts/split_tox_gh_actions/templates/test_group.jinja); the three generated workflow files (test-integrations-dbs.yml, test-integrations-tasks.yml, test-integrations-web-1.yml) are regenerated by running python scripts/split_tox_gh_actions/split_tox_gh_actions.py.

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View Session in Sentry

[github-actions]

Codecov Results 📊

✅ 89401 passed | ⏭️ 6013 skipped | Total: 95414 | Pass Rate: 93.7% | Execution Time: 302m 22s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📈 +261
Passed Tests	📈 +261
Failed Tests	—
Skipped Tests	—

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2390 uncovered lines.
✅ Project coverage is 89.81%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    89.81%    89.81%        —%
==========================================
  Files          192       192         —
  Lines        23457     23457         —
  Branches      8060      8060         —
==========================================
+ Hits         21066     21067        +1
- Misses        2391      2390        -1
- Partials      1328      1327        -1

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Generated by Codecov Action

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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