Bump sigstore from 4.1.0 to 4.1.1 (#119)

Bumps [sigstore](https://github.com/sigstore/sigstore-js) from 4.1.0 to 4.1.1.
- [Release notes](https://github.com/sigstore/sigstore-js/releases)
- [Commits](https://github.com/sigstore/sigstore-js/compare/sigstore@4.1.0...sigstore@4.1.1)

---
updated-dependencies:
- dependency-name: sigstore
  dependency-version: 4.1.1
  dependency-type: indirect
...

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Author: dependabot[bot]