[dependency]: Bump axios-mock-adapter in /faucet/backend

Bumps [axios-mock-adapter](https://github.com/ctimmerm/axios-mock-adapter) from 1.21.5 to 1.22.0.
- [Release notes](https://github.com/ctimmerm/axios-mock-adapter/releases)
- [Changelog](https://github.com/ctimmerm/axios-mock-adapter/blob/master/CHANGELOG.md)
- [Commits](ctimmerm/axios-mock-adapter@v1.21.5...v1.22.0)

---
updated-dependencies:
- dependency-name: axios-mock-adapter
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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