Update docker.io/postgres Docker tag to v18

.gitea/workflows/lint-test-docker.yaml

@@ -34,9 +34,10 @@ jobs:
         if: steps.check-branch-exists.outputs.exists == 'false'
         run: echo "Branch origin/${{ github.base_ref }} was not found, likely already merged"
 
+
       - name: Set up Node.js
         if: steps.check-branch-exists.outputs.exists == 'true'
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: '22'