Merge branch '6.4' into 7.0

* 6.4:
  [TwigBridge] foundation 5 layout: use form_label_content block for checkbox and radio labels
  [TwigBridge] Fix compat with Twig v3.9
  [Cache] Sync the Redis proxies with upstream
  [Doctrine Messenger] Fix support for pgsql + pgbouncer.
  [Mailer] Simplify fix
  Do not produce notice/warning when consuming from multiple transports and explicitly listed queues
  [FrameworkBundle] Check if the _route attribute exists on the request
  [Scheduler] fix documentation link
  [PropertyAccess] Fixes getValue() on an unitialized object property on a lazy ghost
  [HttpClient] Make retry strategy work again
  AssetMapper: Remove 'auto-generated' info
  [Mailer] Fix signed emails breaking the profiler
  [Mailer] [Mailgun] Fix expecting payload without tags or user variables
  [Validator] Update Spanish (es) translations
  Fix fetching data in `W3CReferenceTest` on AppVeyor
  Fix SQS visibility_timeout type
  [VarDumper] Fix serialization of stubs with null or uninitialized values

Transport/Connection.php

@@ -128,7 +128,7 @@ public static function fromDsn(#[\SensitiveParameter] string $dsn, array $option
             'buffer_size' => (int) $options['buffer_size'],
             'wait_time' => (int) $options['wait_time'],
             'poll_timeout' => $options['poll_timeout'],
-            'visibility_timeout' => $options['visibility_timeout'],
+            'visibility_timeout' => null !== $options['visibility_timeout'] ? (int) $options['visibility_timeout'] : null,
             'auto_setup' => filter_var($options['auto_setup'], \FILTER_VALIDATE_BOOL),
             'queue_name' => (string) $options['queue_name'],
         ];