Add deprecation notice for enabledCache method

The enabledCache method is now marked as deprecated starting from version 4.1 and will be removed in version 5.0. Users are encouraged to use the Http Client for caching responses instead. This change aligns with the planned removal of this method in the next

Author: Spomky

src/Library/KeyManagement/UrlKeySetFactory.php

@@ -25,6 +25,9 @@ public function __construct(
         $this->cacheItemPool = new NullAdapter();
     }
 
+    /**
+     * @deprecated since 4.1 and will be removed in 5.0. Please use the Http Client to cache the responses instead.
+     */
     public function enabledCache(CacheItemPoolInterface $cacheItemPool, int $expiresAfter = 3600): void
     {
         $this->cacheItemPool = $cacheItemPool;