Update docker.io/postgres Docker tag to v18

.gitea/workflows/renovate.yaml

@@ -13,7 +13,7 @@ on:
 jobs:
   renovate:
     runs-on: ubuntu-latest
-    container: ghcr.io/renovatebot/renovate:42
+    container: ghcr.io/renovatebot/renovate:41
     steps:
       - name: Checkout
         uses: actions/checkout@v4

hosts/ps10rp/gitea/compose.yaml

@@ -19,7 +19,7 @@ services:
             - /dev/net/tun:/dev/net/tun
 
     postgresql:
-        image: docker.io/postgres:17.6-alpine3.21
+        image: docker.io/postgres:18.0-alpine3.21
         container_name: gitea-postgres
         env_file:
             - .env