chore(deps): update dpage/pgadmin4 docker tag to v8.4 (#1058)

* chore(deps): update dpage/pgadmin4 docker tag to v8.4

* Update app version [skip ci]

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

apps/pgadmin4/8.4/docker-compose.yml

@@ -1,7 +1,7 @@
 version: '3.8'
 services:
   pgadmin4:
-    image: dpage/pgadmin4:8.3
+    image: dpage/pgadmin4:8.4
     container_name: ${CONTAINER_NAME}
     restart: always
     labels: