v1.28.12+rke2r1.stable.0

What's Changed

• GitHub Actions migration by @brooksn in #46
• read-vault-secrets github token by @brooksn in #47
• change private-key key name by @brooksn in #48
• fix matrix upload script by @brooksn in #49

Full Changelog: v1.28.11+rke2r1.stable.0...v1.28.12+rke2r1.stable.0