fix(deps): bump @routup/swagger from 2.3.0 to 2.3.1 (#1308)

Bumps [@routup/swagger](https://github.com/routup/plugins/tree/HEAD/packages/swagger) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/routup/plugins/releases)
- [Changelog](https://github.com/routup/plugins/blob/master/packages/swagger/CHANGELOG.md)
- [Commits](https://github.com/routup/plugins/commits/swagger-v2.3.1/packages/swagger)

---
updated-dependencies:
- dependency-name: "@routup/swagger"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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