remove tests from required status checks for scaffolding

[bobcallaway]

sigstore/scaffolding#715 changed the test behavior of scaffolding to optionally only run certain tests on terraform vs non-terraform PRs

[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/30456d4b-66b7-4ba9-b6c3-f239ceadbe03

@ Previewing update......
pulumi:pulumi:Stack: (same)
[urn=urn:pulumi:github-prod::sigstore-github-sync::pulumi:pulumi:Stack::sigstore-github-sync-github-prod]
+ github:index/repositoryCollaborator:RepositoryCollaborator: (create)
    [urn=urn:pulumi:github-prod::sigstore-github-sync::github:index/repositoryCollaborator:RepositoryCollaborator::docs-smythp]
    permission               : "maintain"
    permissionDiffSuppression: false
    repository               : "docs"
    username                 : "smythp"
+ github:index/repositoryCollaborator:RepositoryCollaborator: (create)
    [urn=urn:pulumi:github-prod::sigstore-github-sync::github:index/repositoryCollaborator:RepositoryCollaborator::docs-jonvnadelberg]
    permission               : "triage"
    permissionDiffSuppression: false
    repository               : "docs"
    username                 : "jonvnadelberg"
@ Previewing update....
~ github:index/branchProtection:BranchProtection: (update)
    [id=BPR_kwDOGqlInc4B9eNk]
    [urn=urn:pulumi:github-prod::sigstore-github-sync::github:index/branchProtection:BranchProtection::scaffolding-main]
  ~ requiredStatusChecks: [
      ~ [0]: {
              ~ contexts: [
                  - [0]: "Test github action with TUF (v1.25.x, latest-release, 1.20.x, test github action with TUF)"
                  - [1]: "e2e tests (v1.24.x, fulcio rekor ctlog e2e, 1.20.x)"
                  - [2]: "Test github action with TUF (v1.24.x, latest-release, 1.20.x, test github action with TUF)"
                  - [3]: "e2e tests using release (v1.23.x, fulcio rekor ctlog e2e, 1.20.x)"
                  - [4]: "Test github action with TUF (v1.23.x, latest-release, 1.20.x, test github action with TUF)"
                  - [5]: "e2e tests (v1.23.x, fulcio rekor ctlog e2e, 1.20.x)"
                  - [9]: "e2e tests using release (v1.25.x, fulcio rekor ctlog e2e, 1.20.x)"
                  - [11]: "e2e tests (v1.25.x, fulcio rekor ctlog e2e, 1.20.x)"
                  - [13]: "e2e tests using release (v1.24.x, fulcio rekor ctlog e2e, 1.20.x)"
                ]
            }
    ]
Resources:
+ 2 to create
~ 1 to update
3 changes. 578 unchanged