fix: upgrade ws from 7.4.0 to 7.4.1 (#7)

Snyk has created this PR to upgrade ws from 7.4.0 to 7.4.1.

See this package in npm:
https://www.npmjs.com/package/ws

See this project in Snyk:
https://app.snyk.io/org/tshemsedinov/project/a89ddf91-c15f-423e-a75f-25c43a70ee56?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -5,7 +5,7 @@
   "description": "Websocket Chat Example",
   "license": "MIT",
   "dependencies": {
-    "ws": "^7.4.0"
+    "ws": "^7.4.1"
   },
   "readmeFilename": "README.md"
 }