fix: upgrade graphql from 15.3.0 to 15.4.0

Snyk has created this PR to upgrade graphql from 15.3.0 to 15.4.0.

See this package in npm:
https://www.npmjs.com/package/graphql

See this project in Snyk:
https://app.snyk.io/org/acinader/project/8c1a9edb-c8f5-4dc1-b221-4d6030a323eb?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -35,7 +35,7 @@
     "deepcopy": "2.1.0",
     "express": "4.17.1",
     "follow-redirects": "1.13.0",
-    "graphql": "15.3.0",
+    "graphql": "15.4.0",
     "graphql-list-fields": "2.0.2",
     "graphql-relay": "0.6.0",
     "graphql-upload": "11.0.0",