Exclude overleaf from watchtower

overleaf/compose.yml

@@ -25,6 +25,8 @@ services:
       OVERLEAF_SITE_LANGUAGE: de
       OVERLEAF_SITE_URL: https://tex.eliasfink.de
       REDIS_HOST: overleaf_redis
+    labels:
+      - com.centurylinklabs.watchtower.enable=false
     networks:
       - default
       - traefik