Update dependency webpack-dev-server to v3.10.3

Author: renovate-bot

package.json

@@ -8,6 +8,6 @@
  "twilio-video": "^1.18.1"
  },
  "devDependencies": {
- "webpack-dev-server": "3.7.1"
+ "webpack-dev-server": "3.10.3"
  }
 }