fix: validate contract (#2197) #247

Job	Run time
test / Test (main-module)	3m 32s
test / Test (controlplane)	6m 19s
test / Test (artifact-cas)	33s
test / Test (cli)	1m 42s
init_attestation	9s
Release CLI and control-plane/artifact-cas container images	12m 8s
Finish Attestation	7s
modify_release_notes	6s
	24m 36s

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