chore(deps): update postgresql-ha docker tag to v12 (#528)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [postgresql-ha](https://github.com/bitnami/charts) ([source](https://github.com/bitnami/charts/tree/HEAD/bitnami/postgresql-ha)) | major | `11.9.4` -> `12.3.1` |

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Co-authored-by: pat-s <patrick.schratz@gmail.com>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/528
Co-authored-by: Renovate Bot <renovate-bot@gitea.com>
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Chart.yaml

@@ -41,7 +41,7 @@ dependencies:
   # https://github.com/bitnami/charts/blob/main/bitnami/postgresql-ha/Chart.yaml
   - name: postgresql-ha
     repository: oci://registry-1.docker.io/bitnamicharts
-    version: 11.9.4
+    version: 12.3.1
     condition: postgresql-ha.enabled
   # https://github.com/bitnami/charts/blob/main/bitnami/redis-cluster/Chart.yaml
   - name: redis-cluster