chore(deps-dev): bump @readme/variable from 13.2.1 to 13.4.6 (#131)

Bumps [@readme/variable](https://github.com/readmeio/api-explorer/tree/HEAD/packages/variable) from 13.2.1 to 13.4.6.
- [Release notes](https://github.com/readmeio/api-explorer/releases)
- [Changelog](https://github.com/readmeio/api-explorer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/readmeio/api-explorer/commits/v13.4.6/packages/variable)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>