update README.md sponsors

README.md

@@ -23,6 +23,9 @@ A big thank you to everyone supporting us on GitHub Sponsors—your contribution
   <a href="https://www.maehdros.com/" target=_blank><img
     src="https://avatars.githubusercontent.com/u/173894712" height="58"
   /></a>
+  <a href="https://garske-systems.de/" target=_blank><img
+    src="https://garske-systems.de/img/logo_min.png" height="58"
+  /></a>
 
 ### 50$/Month Sponsors
   <a href="https://github.com/vnukhr" target=_blank><img

docker-compose.yml

@@ -601,7 +601,7 @@ services:
             - watchdog
 
     dockerapi-mailcow:
-      image: ghcr.io/mailcow/dockerapi:2.13
+      image: ghcr.io/mailcow/dockerapi:2.12
       security_opt:
         - label=disable
       restart: always