Bump semver and yargs in /server/tests/js_tests

Removes [semver](https://github.com/npm/node-semver). It's no longer used after updating ancestor dependency [yargs](https://github.com/yargs/yargs). These dependencies need to be updated together.


Removes `semver`

Updates `yargs` from 6.6.0 to 17.7.2
- [Release notes](https://github.com/yargs/yargs/releases)
- [Changelog](https://github.com/yargs/yargs/blob/main/CHANGELOG.md)
- [Commits](https://github.com/yargs/yargs/compare/v6.6.0...v17.7.2)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: indirect
- dependency-name: yargs
  dependency-type: direct:production
...

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

server/tests/js_tests/package.json

@@ -19,6 +19,6 @@
     "request": "^2.78.0",
     "sprintf-js": "~1.0.3",
     "winston": "^2.3.1",
-    "yargs": "^6.3.0"
+    "yargs": "^17.7.2"
   }
 }