chore(deps): update docker.io/redis docker tag to v8

Author: renovate[bot]

docker/immich/compose.yaml

@@ -42,7 +42,7 @@ services:
 
   redis:
     container_name: immich_redis
-    image: docker.io/redis:7.4-alpine@sha256:02419de7eddf55aa5bcf49efb74e88fa8d931b4d77c07eff8a6b2144472b6952
+    image: docker.io/redis:8.0-alpine@sha256:48501c5ad00d5563bc30c075c7bcef41d7d98de3e9a1e6c752068c66f0a8463b
     healthcheck:
       test: redis-cli ping || exit 1
     restart: always