1. Split the psql matrix jobs into composite actions. Matrix jobs that
can skip do not work with required checks on GitHub because skipped and
unskipped emit different job names (GitHub bug
https://github.com/orgs/community/discussions/9141).
2. Dedupe node and go setup steps into composite actions
Currently test-psql branch protection is disabled, will re-enable when
merging this.
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Signed-off-by: silverwind <me@silverwind.io>
Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>
Co-authored-by: Nicolas <bircni@icloud.com>
