Add two cosign maintainers to cosign-installer

[haydentherapper]

Summary

Release Note

Documentation

[haydentherapper]

@cpanato, do you have instructions on how to administer Pulumi? It'd be good to have documentation on this. Also do you know who is set as Pulumi admins? You and the TSC?

[haydentherapper]

Few things that would be helpful:

• How do you administer Pulumi? Do you prefer CLI or UI?
• What's the login for the UI? Can this be stored in 1password so the TSC has access?
• Same question for the app token

[github-actions]

🍹 preview on sigstore/github-prod

Pulumi report

Previewing update (sigstore/github-prod)

View Live: https://app.pulumi.com/sigstore/sigstore-github-sync/github-prod/previews/4f968f41-574a-41c2-ae19-b066c60f34d5

@ Previewing update.....
pulumi:pulumi:Stack: (same)
[urn=urn:pulumi:github-prod::sigstore-github-sync::pulumi:pulumi:Stack::sigstore-github-sync-github-prod]
+ github:index/teamMembership:TeamMembership: (create)
    [urn=urn:pulumi:github-prod::sigstore-github-sync::github:index/teamMembership:TeamMembership::znewman01-cosign-installer-codeowners]
    role      : "member"
    teamId    : "4728120"
    username  : "znewman01"
+ github:index/teamMembership:TeamMembership: (create)
    [urn=urn:pulumi:github-prod::sigstore-github-sync::github:index/teamMembership:TeamMembership::haydentherapper-cosign-installer-codeowners]
    role      : "member"
    teamId    : "4728120"
    username  : "haydentherapper"
Resources:
+ 2 to create
526 unchanged