Bump yargs from 16.2.0 to 17.0.1 in /app

Bumps [yargs](https://github.com/yargs/yargs) from 16.2.0 to 17.0.1.
- [Release notes](https://github.com/yargs/yargs/releases)
- [Changelog](https://github.com/yargs/yargs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yargs/yargs/compare/v16.2.0...v17.0.1)

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

app/package.json

@@ -38,7 +38,7 @@
     "npm": "6",
     "path": "0.12.7",
     "rxjs": "^6.6.7",
-    "yargs": "^16.2.0",
+    "yargs": "^17.0.1",
     "zone.js": "^0.11.4"
   },
   "optionalDependencies": {