Merge pull request #396 from juliusknorr/renovate/redis-8.x

chore(deps): update redis docker tag to v8

Author: juliusknorr

docker-compose.yml

@@ -722,7 +722,7 @@ services:
       - ${PROXY_SERVICE:-proxy}
 
   redis:
-    image: redis:7
+    image: redis:8
     volumes:
       - redis:/data