Enable and fix GraphQlTestIntegrationTests

Author: philwebb

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTestIntegrationTests.java

@@ -16,7 +16,6 @@
 
 package org.springframework.boot.test.autoconfigure.graphql;
 
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.annotation.Autowired;
@@ -28,8 +27,7 @@
  * @author Brian Clozel
  */
 @GraphQlTest(BookController.class)
-@Disabled
-public class GraphQlTestIntegrationTests {
+class GraphQlTestIntegrationTests {
 
 	@Autowired
 	private GraphQlTester graphQlTester;