chore(deps): update postgresql docker tag to v18.7.12 (#1292)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

charts/netbox/Chart.lock

@@ -1,6 +1,6 @@
 apiVersion: v2
 name: netbox
-version: 8.3.30
+version: 8.3.31
 # renovate: image=ghcr.io/netbox-community/netbox
 appVersion: "v4.6.4"
 type: application
@@ -23,7 +23,7 @@ dependencies:
     tags:
       - bitnami-common
   - name: postgresql
-    version: ^18.7.11
+    version: ^18.7.12
     repository: oci://registry-1.docker.io/bitnamicharts
     condition: postgresql.enabled
   - name: valkey