Update docker.io/postgres Docker tag to v18

.gitea/workflows/render-manifests.yaml

@@ -157,14 +157,14 @@ jobs:
               -H "Authorization: token ${GITEA_TOKEN}" \
               -H "Content-Type: application/json" \
               --data "${PAYLOAD}" \
-              "${API_ENDPOINT}" | tee /tmp/pr_response \
+              "${API_ENDPOINT}" | tee /tmp/pr_response.json \
               | head -n 1
           )
 
-          echo ">> Gitea API Response Body ..."
-          echo "----"
-          echo "$(cat /tmp/pr_response)"
-          echo "----"
+          echo ">> Gitea API Response Body ...
+          echo "----
+          echo "$(cat /tmp/pr_response.json)"
+          echo "----
 
           if [ "$HTTP_STATUS" == "201" ]; then
             echo ">> Pull Request created successfully!"