chore(deps): update alpine docker tag to v3.22 (#6417)

Signed-off-by: milkmaker <milkmaker@mailcow.de>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

helper-scripts/docker-compose.override.yml.d/EXTERNAL_MYSQL_SOCKET/docker-compose.override.yml

@@ -25,6 +25,6 @@ services:
         - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
 
     mysql-mailcow:
-      image: alpine:3.20
+      image: alpine:3.22
       command: /bin/true
       restart: "no"