chore(deps-dev): bump openapi-typescript from 7.6.1 to 7.8.0

Bumps [openapi-typescript](https://github.com/openapi-ts/openapi-typescript/tree/HEAD/packages/openapi-typescript) from 7.6.1 to 7.8.0.
- [Release notes](https://github.com/openapi-ts/openapi-typescript/releases)
- [Changelog](https://github.com/openapi-ts/openapi-typescript/blob/main/packages/openapi-typescript/CHANGELOG.md)
- [Commits](https://github.com/openapi-ts/openapi-typescript/commits/openapi-typescript@7.8.0/packages/openapi-typescript)

---
updated-dependencies:
- dependency-name: openapi-typescript
  dependency-version: 7.8.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]