Update to v20.5

Author: kaferi

package.json

@@ -37,7 +37,7 @@
     },
     "devDependencies": {
         "@types/mocha": "^5.2.5",
-        "mocha": "^5.2.0",
+        "mocha": "^7.0.0",
         "ts-node": "^7.0.0",
         "typescript": "^2.4.2"
     }