increase timeout for --create-custom-diff

Author: Kelly Selden

test/integration/index-test.js

@@ -297,7 +297,7 @@ applicable codemods: ember-modules-codemod, ember-qunit-codemod, ember-test-help
   });
 
   it('can create a personal diff instead of using an output repo - app', async function() {
-    this.timeout(3 * 60 * 1000);
+    this.timeout(5 * 60 * 1000);
 
     let {
       status
@@ -315,7 +315,7 @@ applicable codemods: ember-modules-codemod, ember-qunit-codemod, ember-test-help
   });
 
   it('can create a personal diff instead of using an output repo - addon', async function() {
-    this.timeout(3 * 60 * 1000);
+    this.timeout(5 * 60 * 1000);
 
     let {
       status