ci: Add SLSA provenance to releases #4510

Job	Run time
end2end_test_prep	1m 18s
unit_tests (stable)	2m 51s
functional_tests (stable)	1m 58s
unit_tests (beta)	2m 53s
functional_tests (beta)	2m 0s
end2end_test_staging	3m 29s
end2end_test_12	2m 3s
end2end_test_34	2m 6s
end2end_test_56	2m 3s
push_canary_secondary_image	0s
push_prod_virtualenv_image	0s
push_canary_virtualenv_image	0s
push_prod_secondary_image	0s
provenance_canary_secondary_image	0s
provenance_prod_virtualenv_image	0s
provenance_canary_virtualenv_image	0s
provenance_prod_secondary_image	0s
push_staging_virtual_env_images	0s
push_staging_secondary_image	0s
push_staging_observable_secondary_image	0s
	20m 41s

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