Update dependency graphql to v15.7.2

Author: renovate-bot

package-lock.json

@@ -42,7 +42,7 @@
     "eslint-plugin-node": "11.1.0",
     "eslint-plugin-prettier": "4.0.0",
     "eslint-plugin-promise": "5.1.1",
-    "graphql": "15.6.1",
+    "graphql": "15.7.2",
     "graphql-tools": "7.0.5",
     "husky": "7.0.4",
     "jest": "27.3.1",