Merge branch '6.4' into 7.0

* 6.4:
  fix test
  fix test
  [SecurityBundle] Fix failing tests
  fix tests
  [DependencyInjection] fix unable to make lazy service from readonly class
  [Dotenv] Specify envKey while loading variables with the dotenv:dump command
  [Mailer][Postmark][Webhook] Accept different date formats

Author: xabbuh

Command/DotenvDumpCommand.php

@@ -95,10 +95,11 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
     private function loadEnv(string $dotenvPath, string $env, array $config): array
     {
-        $dotenv = new Dotenv();
         $envKey = $config['env_var_name'] ?? 'APP_ENV';
         $testEnvs = $config['test_envs'] ?? ['test'];
 
+        $dotenv = new Dotenv($envKey);
+
         $globalsBackup = [$_SERVER, $_ENV];
         unset($_SERVER[$envKey]);
         $_ENV = [$envKey => $env];