Bump postgres default to 18.6-alpine3.23 - #2637
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Signed-off-by: Fabian Gonzalez <fabian.gonzalez@solo.io>
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#2650) Backport of #2637 to `release/v0.10.x`. Bumps the bundled/default PostgreSQL image from `18.3-alpine` to `18.6-alpine3.23`, resolving CVEs. This is a safe bump based on the [pg 18.6 release notes](https://www.postgresql.org/docs/release/18.6/) — we don't use GIN indexes in any table. `alpine` is pinned to `3.23` (the variant the previous `18.3` image used); without the pin the tag would float to `3.24`. Also carries the upgrade-test fix from the original PR: an image-tag bump recreates the Postgres pod, and the old `Terminating` pod can still match the selector for its whole grace period, so `podNameForSelectorE` now sorts by creation timestamp and takes the newest pod. Cherry-picked cleanly from bf49169 — no conflicts, no manual edits. **Verification** - `helm unittest helm/kagent -f 'tests/postgresql_test.yaml'` — 32/32 pass - `go vet ./core/test/upgrade/` — clean Signed-off-by: Fabian Gonzalez <fabian.gonzalez@solo.io>
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Bumps the base/default postgres version to
18.6-alpine3.23, resolving CVEs.This is a safe bump based on the pg upgrade notes, as we don't use GIN indexes in tables. Pinned
alpineto3.23, as it was the version used for the previous18.4image -- if we did not add the alpine pin, it would have bumped to3.24.