fix: upgrade graphql from 14.0.2 to 14.5.8

Snyk has created this PR to upgrade graphql from 14.0.2 to 14.5.8.

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

See this project in Snyk:
https://app.snyk.io/org/davidkindler/project/7bf059a5-fe44-4bb1-bc38-43e3b14b6628?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -34,7 +34,7 @@
     "dataloader": "^1.4.0",
     "dotenv": "^6.2.0",
     "express": "^4.16.4",
-    "graphql": "^14.0.2",
+    "graphql": "^14.5.8",
     "graphql-iso-date": "^3.6.1",
     "graphql-resolvers": "^0.2.2",
     "jsonwebtoken": "^8.4.0",