Merge pull request #6399 from rldhont/bump-redis-8

Tests: Bump Redis to 8 in docker compose

Author: rldhont

tests/docker-compose.yml

@@ -22,7 +22,7 @@ services:
       start_interval: 2s
       start_period: 10s
   redis:
-    image: redis:7-alpine
+    image: redis:8-alpine
     container_name: "lizmap${LZMBRANCH}_test_redis"
   openldap:
     build: ./docker-conf/openldap