Kubernetes 1.37 Variants Tracking Issue

This is a "living" issue used to track features, bug fixes, and work required for Bottlerocket k8s-1.37 variants.

What I'd like:

• Use pre-release sources in packages kubernetes-1.37 and ecr-credential-provider-1.37 (bottlerocket-core-kit)
• Use official 1.37.0 sources in packages kubernetes-1.37 and ecr-credential-provider-1.37 (bottlerocket-core-kit)
• Add variants for k8s 1.37 (bottlerocket)