bug #905 Changed JWTAuthenticator::start method return type to more…

… generic `Response` type (aurimasniekis)

This PR was merged into the 2.x branch.

Discussion
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Changed `JWTAuthenticator::start` method return type to more generic `Response` type

Not a big change just fixes an issue where the old code is upgraded to use the new JWTAuthenticator.

This fixes #904

Commits
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5e76203 Changed `JWTAuthenticator::start`` method to more generic `Response` type

Security/Authenticator/JWTAuthenticator.php

@@ -72,7 +72,7 @@ public function __construct(
     /**
      * {@inheritdoc}
      */
-    public function start(Request $request, AuthenticationException $authException = null): JWTAuthenticationFailureResponse
+    public function start(Request $request, AuthenticationException $authException = null): Response
     {
         $exception = new MissingTokenException('JWT Token not found', 0, $authException);
         $event = new JWTNotFoundEvent($exception, new JWTAuthenticationFailureResponse($exception->getMessageKey()));