Bump axios from 0.16.2 to 0.19.0 in /samples/react-youtube

Bumps [axios](https://github.com/axios/axios) from 0.16.2 to 0.19.0.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md)
- [Commits](https://github.com/axios/axios/compare/v0.16.2...v0.19.0)

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

samples/react-youtube/package.json

@@ -20,7 +20,7 @@
     "@types/react-addons-update": "0.14.14",
     "@types/react-dom": "0.14.18",
     "@types/webpack-env": ">=1.12.1 <1.14.0",
-    "axios": "^0.16.2",
+    "axios": "^0.19.0",
     "lodash": "^4.17.4",
     "react": "15.4.2",
     "react-dom": "15.4.2"