build(deps): Bump tar and npm in /website

Bumps [tar](https://github.com/isaacs/node-tar) to 7.5.19 and updates ancestor dependency [npm](https://github.com/npm/cli). These dependencies need to be updated together.


Updates `tar` from 6.2.1 to 7.5.19
- [Release notes](https://github.com/isaacs/node-tar/releases)
- [Changelog](https://github.com/isaacs/node-tar/blob/main/CHANGELOG.md)
- [Commits](isaacs/node-tar@v6.2.1...v7.5.19)

Updates `npm` from 10.5.2 to 12.0.1
- [Release notes](https://github.com/npm/cli/releases)
- [Changelog](https://github.com/npm/cli/blob/latest/CHANGELOG.md)
- [Commits](npm/cli@v10.5.2...v12.0.1)

---
updated-dependencies:
- dependency-name: tar
  dependency-version: 7.5.19
  dependency-type: indirect
- dependency-name: npm
  dependency-version: 12.0.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]