Update docker.io/postgres Docker tag to v18

.gitea/workflows/render-manifests-dispatch.yaml

@@ -197,16 +197,13 @@ jobs:
         run: |
           cd ${MANIFEST_DIR}
 
-          git status --porcelain
-
-          if git status --porcelain | grep -q . ; then
+          if git status --porcelain | grep -q .; then
             echo ">> Changes detected"
-            # git status --porcelain
+            git status --porcelain
             echo "changes-detected=true" >> $GITEA_OUTPUT
-
           else
             echo ">> No changes detected, skipping PR creation"
-
+            exit 0
           fi
 
           echo "----"