Merge branch '7.4' into 8.0

* 7.4:
  [Translation] Make the extractor alias optional
  [Cache] Fix accepting named closures as early-expiration callbacks
  [Mime] Update mime types
  [HttpKernel] Conflict with symfony/flex < 2.10
  [Yaml] Align unquoted multiline scalar parsing with spec for comments
  work around limitation in JsonResponse when the data is null
  do not use recipient phone numbers as sender e-mail addresses
  [Dotenv] DotenvDumpCommand cannot be internal

Author: nicolas-grekas

Command/DotenvDumpCommand.php

@@ -23,7 +23,13 @@
 /**
  * A console command to compile .env files into a PHP-optimized file called .env.local.php.
  *
- * @internal
+ * To use this command, first register it explicitly as a service, e.g in your services.yaml file:
+ *
+ *     ```yaml
+ *     services:
+ *         # [...]
+ *         Symfony\Component\Dotenv\Command\DotenvDumpCommand: ~
+ *     ```
  */
 #[Autoconfigure(bind: ['$projectDir' => '%kernel.project_dir%', '$defaultEnv' => '%kernel.environment%'])]
 #[AsCommand(name: 'dotenv:dump', description: 'Compile .env files to .env.local.php')]