MM-59934: Add Redis to CI and other improvements (#28164)

- Update library version.
- Added MaxFlush delay to help reduce CPU usage.
- Fall back to LRU cache for the caches which use SCAN.
- Added mattermost-redis and running for all api layer
tests in Postgres.

https://mattermost.atlassian.net/browse/MM-59934
```release-note
NONE
```

server/build/docker-compose.common.yml

@@ -118,6 +118,10 @@ services:
       discovery.type: single-node
       plugins.security.disabled: "true"
       ES_JAVA_OPTS: "-Xms512m -Xmx512m"
+  redis:
+    image: "redis:7.4.0"
+    networks:
+      - mm-test
   dejavu:
     image: "appbaseio/dejavu:3.4.2"
     networks: