Changes
The main change fixes installation issue on Python 3.14 (#269): The action now manages the Python version it uses internally.
- Refactor Rekor v2 signing test by @jku in #262
- selftest: Upgrade client to sigstore-python 4.1.0 by @jku in #265
- Manage python versions by @jku in #267
Full Changelog: v0.0.21...v0.0.22
