https://build.spring.io/browse/INT-FATS5IC-400 When we run several concurrent builds (e.g. CI) and use the same shared Redis server we may end up with the case when one process reads data populated by another because we use the same key (groupId in our case) * Fix `RedisMessageGroupStoreTests` to use `UUID.randomUUID()` for the `groupId` **Cherry-pick to 4.3.x**