chore(deps): bump json5 and ts-loader in /extensions/vscode (#3678)

Removes [json5](https://github.com/json5/json5). It's no longer used after updating ancestor dependency [ts-loader](https://github.com/TypeStrong/ts-loader). These dependencies need to be updated together.


Removes `json5`

Updates `ts-loader` from 6.2.2 to 9.4.2
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/main/CHANGELOG.md)
- [Commits](TypeStrong/ts-loader@v6.2.2...v9.4.2)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: ts-loader
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Felix Angelov <[email protected]>