Update Auth.php

Fixes  "Too few arguments to function WPGraphQL\\Data\\DataSource::resolve_user()" error after successful login with latest wp-graphql version

Author: tomislavp83

src/Auth.php

@@ -70,7 +70,7 @@ public static function login_and_get_token( $username, $password ) {
 		$response = [
 			'authToken'    => self::get_signed_token( $user ),
 			'refreshToken' => self::get_refresh_token( $user ),
-			'user'         => DataSource::resolve_user( $user->data->ID ),
+			'user'         => DataSource::resolve_user( $user->data->ID, \WPGraphQL::get_app_context() ),
 		];
 
 		/**