Bump fetch-mock from 12.0.2 to 12.1.0 (#506)

Bumps [fetch-mock](https://github.com/wheresrhys/fetch-mock/tree/HEAD/packages/fetch-mock) from 12.0.2 to 12.1.0.
- [Release notes](https://github.com/wheresrhys/fetch-mock/releases)
- [Changelog](https://github.com/wheresrhys/fetch-mock/blob/main/packages/fetch-mock/CHANGELOG.md)
- [Commits](https://github.com/wheresrhys/fetch-mock/commits/fetch-mock-v12.1.0/packages/fetch-mock)

---
updated-dependencies:
- dependency-name: fetch-mock
  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>