Use official coturn docker image.

Update nextcloud app to 22.

nextcloud/docker-compose.yml

@@ -49,7 +49,7 @@ services:
     extra_hosts:
       - "${NEXTCLOUD_FQDN}:${TRAEFIK_CONTAINER_IP}"
       - "${COLLABORA_FQDN}:${TRAEFIK_CONTAINER_IP}"
-    image: nextcloud:21
+    image: nextcloud:22
     labels:
       # Watchtower
       - "com.centurylinklabs.watchtower.enable=true"
@@ -95,7 +95,7 @@ services:
       - nextcloud-collabora
 
   nextcloud-coturn:
-      image: instrumentisto/coturn
+      image: coturn/coturn:4
       container_name: nextcloud-coturn
       restart: unless-stopped
       ports: