Merge branch '4.4' into 5.1

* 4.4:
  [ErrorHandler] Return false directly and remove unused variable
  [OptionsResolver] Assert that the error type is valid in deprecations test
  [HttpClient] Allow bearer token with colon
  [Form] Fix custom formats deprecation with HTML5 widgets
  [Translator] Optional Intl dependency
  [Contracts][Translation] Optional Intl dependency
  [ErrorHandler] Escape JSON encoded log context
  update missing translations arabic
  [Yaml] simplify the test
  fix test by letting mock throw the actual expected exception

Author: fabpot

HttpClientTrait.php

@@ -111,7 +111,7 @@ private static function prepareRequest(?string $method, ?string $url, array $opt
             throw new InvalidArgumentException(sprintf('Option "auth_basic" must be string or an array, "%s" given.', get_debug_type($options['auth_basic'])));
         }
 
-        if (isset($options['auth_bearer']) && (!\is_string($options['auth_bearer']) || !preg_match('{^[-._=~+/0-9a-zA-Z]++$}', $options['auth_bearer']))) {
+        if (isset($options['auth_bearer']) && (!\is_string($options['auth_bearer']) || !preg_match('{^[-._=:~+/0-9a-zA-Z]++$}', $options['auth_bearer']))) {
             throw new InvalidArgumentException(sprintf('Option "auth_bearer" must be a string containing only characters from the base 64 alphabet, %s given.', \is_string($options['auth_bearer']) ? 'invalid string' : '"'.get_debug_type($options['auth_bearer']).'"'));
         }