Bump openapi-fetch from 0.13.3 to 0.13.4

Bumps [openapi-fetch](https://github.com/openapi-ts/openapi-typescript/tree/HEAD/packages/openapi-fetch) from 0.13.3 to 0.13.4.
- [Release notes](https://github.com/openapi-ts/openapi-typescript/releases)
- [Changelog](https://github.com/openapi-ts/openapi-typescript/blob/main/packages/openapi-fetch/CHANGELOG.md)
- [Commits](https://github.com/openapi-ts/openapi-typescript/commits/openapi-fetch@0.13.4/packages/openapi-fetch)

---
updated-dependencies:
- dependency-name: openapi-fetch
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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