Merge branch '4.3' into 4.4

* 4.3: fix PHP 5.6 compatibility [Cache] fixed TagAwareAdapter returning invalid cache Add plus character `+` to legal mime subtype Make Symfony\Contracts\Service\Test\ServiceLocatorTest abstract bug #33942 [DI] Add extra type check to php dumper [Dotenv] search variable values in ENV first then env file [PropertyInfo] Respect property name case when guessing from public method name [VarDumper] fix resetting the "bold" state in CliDumper Missing argument in method_exists SCA: added missing break in a loop

Author: xabbuh

FileBinaryMimeTypeGuesser.php

@@ -83,7 +83,7 @@ public function guessMimeType(string $path): ?string
 
  $type = trim(ob_get_clean());
 
- if (!preg_match('#^([a-z0-9\-]+/[a-z0-9\-\.]+)#i', $type, $match)) {
+ if (!preg_match('#^([a-z0-9\-]+/[a-z0-9\-\+\.]+)#i', $type, $match)) {
  // it's not a type, but an error message
  return null;
  }