Merge branch '6.4' into 7.3

* 6.4:
  register attribute loader arguments in a forward-compatible way
  mark test using a Redis connection as an integration test
  ensure compatibility with Relay extension 0.20.0
  [DependencyInjection] Fix `query_string` env processor for URLs without query string
  [DependencyInjection] Fix state corruption in PhpFileLoader during recursive imports
  [FrameworkBundle] Add missing `useAttributeAsKey` calls
  [DependencyInjection] Fix loose validation in #[Autowire] attribute
  [HttpClient] Fix releasing uploaded stream resources

Author: xabbuh

Tests/Store/RelayStoreTest.php

@@ -15,12 +15,18 @@
 
 /**
  * @requires extension relay
+ *
+ * @group integration
  */
 class RelayStoreTest extends AbstractRedisStoreTestCase
 {
     protected function setUp(): void
     {
-        $this->getRedisConnection()->flushDB();
+        try {
+            $this->getRedisConnection()->flushDB();
+        } catch (\Relay\Exception $e) {
+            self::markTestSkipped($e->getMessage());
+        }
     }
 
     public static function setUpBeforeClass(): void