chore(deps): update postgresql docker tag to v18

Chart.lock

@@ -1,7 +1,7 @@
 dependencies:
 - name: postgresql
   repository: oci://registry-1.docker.io/bitnamicharts
-  version: 16.7.27
+  version: 18.2.1
 - name: postgresql-ha
   repository: oci://registry-1.docker.io/bitnamicharts
   version: 16.3.2
@@ -11,5 +11,5 @@ dependencies:
 - name: valkey
   repository: oci://registry-1.docker.io/bitnamicharts
   version: 3.0.31
-digest: sha256:ceb6a1890cfdc2627abb85d3e2a4baa64d30afd21dcfabce978a824a67f0a2bb
-generated: "2025-08-30T00:03:04.59764502Z"
+digest: sha256:5e9cc620120a3f764599188e2abcf2f7368ded720b00c411e5d1882a7366b306
+generated: "2026-01-19T16:01:34.189389514Z"

Chart.yaml

@@ -32,7 +32,7 @@ dependencies:
   # https://github.com/bitnami/charts/blob/main/bitnami/postgresql
   - name: postgresql
     repository: oci://registry-1.docker.io/bitnamicharts
-    version: 16.7.27
+    version: 18.2.1
     condition: postgresql.enabled
   # https://github.com/bitnami/charts/blob/main/bitnami/postgresql-ha/Chart.yaml
   - name: postgresql-ha