MM-56876: Redis: first introduction (#27752)

```release-note
NONE
```

---------

Co-authored-by: Jesús Espino <jespinog@gmail.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/app/admin.go

@@ -17,7 +17,7 @@ import (
 	"github.com/mattermost/mattermost/server/v8/platform/shared/mail"
 )
 
-var latestVersionCache = cache.NewLRU(cache.LRUOptions{
+var latestVersionCache = cache.NewLRU(&cache.CacheOptions{
 	Size: 1,
 })