Test

chore(deps): update sigstore package dependencies #285

Job	Run time
check-flavor	4s
validate (install, unicorn) / run	18m 2s
validate (upgrade, unicorn) / run	17m 9s
validate (install, upstream) / run	17m 11s
validate (upgrade, upstream) / run	17m 8s
	1h 9m 34s

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