chore(deps): update dependency graphql to v16

Author: renovate[bot]

package.json

@@ -25,7 +25,7 @@
     "@babel/register": "7.10.1",
     "babel-eslint": "10.1.0",
     "eslint": "6.8.0",
-    "graphql": "15.0.0",
+    "graphql": "16.12.0",
     "mocha": "7.2.0",
     "pretty-quick": "2.0.1",
     "test-all-versions": "4.1.1"
@@ -47,6 +47,6 @@
     "lodash.without": "^4.4.0"
   },
   "peerDependencies": {
-    "graphql": "^0.12.0 || ^0.13.0 || ^14.0.0 || ^15.0.0"
+    "graphql": "^0.12.0 || ^0.13.0 || ^14.0.0 || ^15.0.0 || ^16.0.0"
   }
 }