update checks for cosign

[cpanato]

Summary

• update checks for cosign

needed for sigstore/cosign#3142

[github-actions]

🍹 preview on sigstore-github-sync/sigstore/github-prod

Pulumi report

Previewing update (sigstore/github-prod)

View Live: https://app.pulumi.com/sigstore/sigstore-github-sync/github-prod/previews/d9afb503-a5b0-4aa8-a898-6c8896e816cd

@ Previewing update.....
pulumi:pulumi:Stack: (same)
[urn=urn:pulumi:github-prod::sigstore-github-sync::pulumi:pulumi:Stack::sigstore-github-sync-github-prod]
~ github:index/branchProtection:BranchProtection: (update)
    [id=BPR_kwDOFAY6Ic4B9d__]
    [urn=urn:pulumi:github-prod::sigstore-github-sync::github:index/branchProtection:BranchProtection::cosign-main]
  ~ requiredStatusChecks: [
      ~ [0]: {
              ~ contexts: [
                  - [5]: "attest / verify-attestation test (v1.24.x, remote)"
                  + [16]: "attest / verify-attestation test (v1.25.x, remote)"
                  ~ [17]: "attest / verify-attestation test (v1.24.x, air-gap)" => "attest / verify-attestation test (v1.25.x, air-gap)"
                ]
            }
    ]
Resources:
~ 1 to update
566 unchanged