v1.28.7

(Note that v1.28.6 was not released, due to a problem in the release process)

What's Changed (since v1.28.5)

• Support definition of kube-controller-manager by @chubchubsancho in #16609
• Update Calico to v3.27.3 by @rifelpet in #16613
• Update golang to 1.22.5 by @justinsb in #16652
• Create a dedicated staging bucket for kops builds by @justinsb in #16678
• Fix cluster-autoscaler priority expander config by @rifelpet in #16673
• Bump cloudbuild to go 1.22.5 by @justinsb in #16683

Full Changelog: v1.28.5...v1.28.7