⬆️ Update sigstore requirement in /ozi/dist/sigstore

Updates the requirements on [sigstore](https://github.com/sigstore/sigstore-python) to permit the latest version.
- [Release notes](https://github.com/sigstore/sigstore-python/releases)
- [Changelog](https://github.com/sigstore/sigstore-python/blob/main/CHANGELOG.md)
- [Commits](sigstore/sigstore-python@v3.1.0...v3.2.0)

---
updated-dependencies:
- dependency-name: sigstore
  dependency-type: direct:production
...

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

ozi/dist/sigstore/requirements.in

@@ -1 +1 @@
-sigstore~=3.1
+sigstore~=3.2