Merge branch 'revert-79276370' into 'master'

Revert "Merge branch 'renovate/lscr.io-linuxserver-heimdall-2021.x' into 'master'"

See merge request !56

intern/docker_heimdall/templates/docker-compose.yml

@@ -4,7 +4,7 @@ version: "2.1"
 services:
 
   app:
-    image: lscr.io/linuxserver/heimdall:2021.11.28
+    image: lscr.io/linuxserver/heimdall:2.5.6
     restart: always
     environment:
       - PUID=1000