Fix package versions

package.json

@@ -45,7 +45,7 @@
     "eslint-plugin-node": "^9.1.0",
     "eslint-plugin-promise": "^4.2.1",
     "eslint-plugin-standard": "^4.0.0",
-    "mocha": "^6.2.0",
+    "mocha": "^8.2.1",
     "sinon": "^7.4.1"
   }
 }