Merge pull request #258 from BryanLaura/renovate/graphql-15.x

Update dependency graphql to v15.5.1

Author: BryanLaura

package.json

@@ -91,7 +91,7 @@
     "dependency-check": "4.1.0",
     "domwaiter": "1.3.0",
     "event-to-promise": "0.8.0",
-    "graphql": "15.5.0",
+    "graphql": "15.5.1",
     "heroku-client": "3.1.0",
     "husky": "5.0.9",
     "image-size": "0.9.3",