chore(deps): bump tar and @nrwl/nx-cloud

Bumps [tar](https://github.com/isaacs/node-tar) to 6.2.1 and updates ancestor dependency [@nrwl/nx-cloud](https://github.com/nrwl/nx). These dependencies need to be updated together.


Updates `tar` from 6.1.11 to 6.2.1
- [Release notes](https://github.com/isaacs/node-tar/releases)
- [Changelog](https://github.com/isaacs/node-tar/blob/main/CHANGELOG.md)
- [Commits](isaacs/node-tar@v6.1.11...v6.2.1)

Updates `@nrwl/nx-cloud` from 15.0.2 to 18.0.0
- [Release notes](https://github.com/nrwl/nx/releases)
- [Commits](nrwl/nx@15.0.2...18.0.0)

---
updated-dependencies:
- dependency-name: tar
  dependency-type: indirect
- dependency-name: "@nrwl/nx-cloud"
  dependency-type: direct:development
...

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