Update ws requirement from 6.1.2 to 6.1.3 (#4027)

Updates the requirements on [ws](https://github.com/websockets/ws) to permit the latest version.
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](https://github.com/websockets/ws/commits/6.1.3)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -246,7 +246,7 @@
 		"webpack": "4.28.4",
 		"webpack-cli": "3.2.1",
 		"websocket": "1.0.28",
-		"ws": "6.1.2",
+		"ws": "6.1.3",
 		"xev": "2.0.1"
 	}
 }