Bump github.com/sigstore/sigstore-go from 1.0.0 to 1.1.0 in /sourcetool (#229)

* Bump github.com/sigstore/sigstore-go from 1.0.0 to 1.1.0 in /sourcetool

Bumps [github.com/sigstore/sigstore-go](https://github.com/sigstore/sigstore-go) from 1.0.0 to 1.1.0.
- [Release notes](https://github.com/sigstore/sigstore-go/releases)
- [Commits](sigstore/sigstore-go@v1.0.0...v1.1.0)

---
updated-dependencies:
- dependency-name: github.com/sigstore/sigstore-go
  dependency-version: 1.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

* Make fakes

Signed-off-by: Adolfo García Veytia (Puerco) <[email protected]>

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Signed-off-by: dependabot[bot] <[email protected]>
Signed-off-by: Adolfo García Veytia (Puerco) <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Adolfo García Veytia (Puerco) <[email protected]>

Author: dependabot[bot]