chore(deps): update postgresql docker tag to v16.7.21 (#908)

Co-authored-by: Renovate Bot <renovate-bot@gitea.com>
Co-committed-by: Renovate Bot <renovate-bot@gitea.com>

Chart.lock

@@ -1,7 +1,7 @@
 dependencies:
 - name: postgresql
   repository: oci://registry-1.docker.io/bitnamicharts
-  version: 16.7.20
+  version: 16.7.21
 - name: postgresql-ha
   repository: oci://registry-1.docker.io/bitnamicharts
   version: 16.0.22
@@ -11,5 +11,5 @@ dependencies:
 - name: valkey
   repository: oci://registry-1.docker.io/bitnamicharts
   version: 3.0.22
-digest: sha256:fb4c01f4480faa0e38e1679ed8c277cdfa0bae7c38db6f52f5b80412749a45d2
-generated: "2025-07-19T00:04:32.007174079Z"
+digest: sha256:96a5d8b084c2558569064245792a7d882c8d0822da2f69fa6423ed682c6861bd
+generated: "2025-07-26T00:04:25.213432532Z"

Chart.yaml

@@ -36,7 +36,7 @@ dependencies:
   # https://github.com/bitnami/charts/blob/main/bitnami/postgresql
   - name: postgresql
     repository: oci://registry-1.docker.io/bitnamicharts
-    version: 16.7.20
+    version: 16.7.21
     condition: postgresql.enabled
   # https://github.com/bitnami/charts/blob/main/bitnami/postgresql-ha/Chart.yaml
   - name: postgresql-ha