Merge branch '5.4' into 6.0

* 5.4:
  [VarDumper] fix dumping typed references from properties
  [VarDumper] minor optim on PHP 8.1
  Update README.md
  [Messenger] [Redis] Allow authentication with user and password
  [Cache] Throw ValueError in debug mode when serialization fails
  [FrameworkBundle] Avoid secrets:decrypt-to-local command to fail
  fix missing classes
  Mattermost Notifier option to post in an other channel
  [Messenger] Add WorkerMetadata to Worker class

Author: nicolas-grekas

Command/SecretsDecryptToLocalCommand.php

@@ -91,9 +91,8 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         foreach ($secrets as $k => $v) {
             if (null === $v) {
-                $io->error($this->vault->getLastMessage());
-
-                return 1;
+                $io->error($this->vault->getLastMessage() ?? sprintf('Secret "%s" has been skipped as there was an error reading it.', $k));
+                continue;
             }
 
             $this->localVault->seal($k, $v);

Resources/config/cache.php

@@ -195,6 +195,7 @@
         ->set('cache.default_marshaller', DefaultMarshaller::class)
             ->args([
                 null, // use igbinary_serialize() when available
+                '%kernel.debug%',
             ])
 
         ->set('cache.early_expiration_handler', EarlyExpirationHandler::class)