Build release artifacts

Bump sigstore from 3.6.5 to 4.2.0 #265

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Run time

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Job	Run time
verify-input	11s
build-android (aarch64)	4m 15s
build-android (x86_64)	21m 30s
build-source	1m 6s
build-docs	5m 16s
test-source	9m 41s
test-docs	43s
	42m 42s