Update redis Docker tag to v7

ansible/roles/pve_docker/files/nextcloud/docker-compose.yml

@@ -42,7 +42,7 @@ services:
       - MYSQL_PASSWORD=nextcloud
 
   redis:
-    image: redis:6-alpine
+    image: redis:7-alpine
     restart: unless-stopped
     volumes:
       - /mnt/tank/dbs/redis/nextcloud:/data

ansible/roles/pve_docker/files/synapse/docker-compose.yml

@@ -35,7 +35,7 @@ services:
       - /mnt/tank/dbs/postgres/synapse:/var/lib/postgresql/data
 
   redis:
-    image: redis:6-alpine
+    image: redis:7-alpine
     restart: unless-stopped
     volumes:
       - /mnt/tank/dbs/redis/synapse:/data

ansible/roles/pve_docker/files/wallabag/docker-compose.yml

@@ -20,7 +20,7 @@ services:
       - traefik
 
   redis:
-    image: redis:6-alpine
+    image: redis:7-alpine
     restart: unless-stopped
     volumes:
       - /mnt/tank/dbs/redis/wallabag:/data