chore(deps): update postgres docker tag to v13.21 (#3857)

* chore(deps): update postgres docker tag to v13.21

* Update app version [skip ci]

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: github-action update-app-version <githubaction@githubaction.com>

postgresql/13.21-alpine/docker-compose.yml

@@ -1,7 +1,7 @@
 services:
   postgres:
     container_name: ${CONTAINER_NAME}
-    image: postgres:13.20-alpine
+    image: postgres:13.21-alpine
     restart: always
     environment:
       - POSTGRES_USER=${PANEL_DB_ROOT_USER}