Kubernetes 1.36 Variants Tracking Issue

[vigh-m]

This is a "living" issue used to track features, bug fixes, and work required for Bottlerocket k8s-1.36 variants.

What I'd like:

• Use pre-release sources in packages kubernetes-1.36 and ecr-credential-provider-1.36 (bottlerocket-core-kit)
• Use official 1.36.0 sources in packages kubernetes-1.36 and ecr-credential-provider-1.36 (bottlerocket-core-kit)
• Add variants for k8s 1.36 (bottlerocket)