chore: raise dev graphql version

Author: m1heng

package-lock.json

@@ -73,7 +73,7 @@
     "@types/sha.js": "2.4.0",
     "@types/table": "6.0.0",
     "cross-env": "7.0.3",
-    "graphql": "15.2.0",
+    "graphql": "15.8.0",
     "heroku-cli-util": "8.0.12",
     "husky": "5.2.0",
     "jest": "24.9.0",