Update sigstore/gh-action-sigstore-python action to v3.0.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
sigstore/gh-action-sigstore-python	action	patch	v3.0.0 -> v3.0.1

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Release Notes

sigstore/gh-action-sigstore-python (sigstore/gh-action-sigstore-python)

v3.0.1

Compare Source

Changed

• The minimum Python version supported by this action is now 3.9
  (#​155)
• The action's Python dependencies are now fully pinned to specific versions
  (#​165)

Fixed

• The rfc3161-client dependency has been upgraded to 1.0.3 to resolve
  a security vulnerability
  (#​182)

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