chore(deps): update gitea.cn/gitea/gitea docker tag to v1.21.7 (#1000)

* chore(deps): update gitea.cn/gitea/gitea docker tag to v1.21.7

* 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>

apps/gitea/1.21.7/docker-compose.yml

@@ -1,7 +1,7 @@
 version: '3'
 services:
   gitea:
-    image: gitea.cn/gitea/gitea:1.21.5
+    image: gitea.cn/gitea/gitea:1.21.7
     container_name: ${CONTAINER_NAME}
     environment:
       - USER_UID=1000