add object-hash package

Author: patinthehat

package.json

@@ -38,7 +38,8 @@
         "dotenv": "^10.0.0",
         "graphql": "^15.5.0",
         "ioredis": "^4.27.5",
-        "lodash": "^4.17.21"
+        "lodash": "^4.17.21",
+        "object-hash": "^2.2.0"
     },
     "devDependencies": {
         "@types/jest": "^26.0.20",