Upgrade graphql-php to v0.13.6

Follows upgrade path outlined in https://github.com/webonyx/graphql-php/blob/master/UPGRADE.md

Author: pmclain

composer.json

@@ -52,7 +52,7 @@
         "symfony/process": "~4.1.0|~4.2.0|~4.3.0",
         "tedivm/jshrink": "~1.3.0",
         "tubalmartin/cssmin": "4.1.1",
-        "webonyx/graphql-php": "^0.12.6",
+        "webonyx/graphql-php": "^0.13.6",
         "zendframework/zend-captcha": "^2.7.1",
         "zendframework/zend-code": "~3.3.0",
         "zendframework/zend-config": "^2.6.0",

composer.lock

@@ -7,11 +7,27 @@
 
 namespace Magento\Framework\GraphQl\Schema\Type;
 
+use Magento\Framework\ObjectManagerInterface;
+
 /**
  * Factory for wrapper of GraphQl ResolveInfo
  */
 class ResolveInfoFactory
 {
+    /**
+     * @var ObjectManagerInterface
+     */
+    private $objectManager;
+
+    /**
+     * @param ObjectManagerInterface $objectManager
+     */
+    public function __construct(
+        ObjectManagerInterface $objectManager
+    ) {
+        $this->objectManager = $objectManager;
+    }
+
     /**
      * Create a wrapper resolver info from the instance of the library object
      *
@@ -25,6 +41,6 @@ public function create(\GraphQL\Type\Definition\ResolveInfo $info) : ResolveInfo
             $values[$key] = $value;
         }
 
-        return new ResolveInfo($values);
+        return $this->objectManager->create(ResolveInfo::class, $values);
     }
 }

lib/internal/Magento/Framework/GraphQl/Schema/Type/ResolveInfoFactory.php

@@ -13,23 +13,27 @@
 class ScalarTypes
 {
     /**
+     * Check if type is scalar
+     *
      * @param string $typeName
      * @return bool
      */
     public function isScalarType(string $typeName) : bool
     {
-        $internalTypes = \GraphQL\Type\Definition\Type::getInternalTypes();
+        $internalTypes = \GraphQL\Type\Definition\Type::getStandardTypes();
         return isset($internalTypes[$typeName]) ? true : false;
     }
 
     /**
+     * Get instance of scalar type
+     *
      * @param string $typeName
      * @return \GraphQL\Type\Definition\ScalarType|\GraphQL\Type\Definition\Type
      * @throws \LogicException
      */
     public function getScalarTypeInstance(string $typeName) : \GraphQL\Type\Definition\Type
     {
-        $internalTypes = \GraphQL\Type\Definition\Type::getInternalTypes();
+        $internalTypes = \GraphQL\Type\Definition\Type::getStandardTypes();
         if ($this->isScalarType($typeName)) {
             return $internalTypes[$typeName];
         } else {