requirements: sigstore ~3.0 #297

Job	Run time
selftest-whitespace (ubuntu-latest)	18s
selftest-whitespace (macos-latest)	19s
selftest-staging	17s
selftest-whitespace (windows-latest)	55s
selftest-release-signing-artifacts-no-op (ubuntu-latest)	18s
selftest (ubuntu-latest)	18s
selftest-release-signing-artifacts-no-op (macos-latest)	19s
selftest (macos-latest)	15s
selftest-release-signing-artifacts-no-op (windows-latest)	50s
selftest (windows-latest)	48s
selftest-xfail-invalid-inputs (--this-should-not-work)	20s
selftest-xfail-invalid-inputs (/tmp/extremely-nonexistent-file)	16s
selftest-custom-paths	20s
selftest-glob	20s
selftest-glob-multiple	22s
selftest-upload-artifacts	17s
selftest-xfail-glob-input-expansion	16s
selftest-identity-token	20s
selftest-verify	21s
selftest-xfail-verify-missing-options (true)	14s
selftest-xfail-verify-missing-options (true, https://token.actions.githubusercontent.com)	17s
selftest-xfail-verify-missing-options (true, https://github.com/sigstore/gh-action-sigstore-pytho...	14s
selftest-xfail-verify-missing-options (false, https://token.actions.githubusercontent.com)	16s
selftest-xfail-verify-missing-options (false, https://github.com/sigstore/gh-action-sigstore-pyth...	48s
all-selftests-pass	3s
	9m 21s

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