build(deps-dev): Bump zircote/swagger-php from 4.1.1 to 4.2.0 (#244)

Bumps [zircote/swagger-php](https://github.com/zircote/swagger-php) from 4.1.1 to 4.2.0.
- [Release notes](https://github.com/zircote/swagger-php/releases)
- [Changelog](https://github.com/zircote/swagger-php/blob/master/Changelog.md)
- [Commits](zircote/swagger-php@4.1.1...4.2.0)

---
updated-dependencies:
- dependency-name: zircote/swagger-php
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

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