Fix for #68

These should be a peer dependency also but this is fixing. https://www.npmjs.com/advisories/1594

package.json

@@ -20,8 +20,8 @@
     "lint": "eslint -c .eslintrc.js"
   },
   "dependencies": {
-    "@nestjs/common": "^7",
-    "@nestjs/core": "^7",
+    "@nestjs/common": "^7.4.4",
+    "@nestjs/core": "^7.4.4",
     "@types/ioredis": "*",
     "@types/uuid": "*",
     "ioredis": "^4",