`mongo-your-spotify` service now restarts unless stopped (#409)

Added `restart: unless-stopped` :)

stack/your-spotify.yml

@@ -20,6 +20,7 @@ services:
   mongo:
     container_name: mongo-your-spotify
     image: mongo:4.4.8
+    restart: unless-stopped
     volumes:
       - /portainer/Files/AppData/Config/your_spotify/DB:/data/db