✨ Add Cluster Stacks SCS for Kubernetes 1.31

[jschoone]

/kind feature

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Environment:

• Kubernetes version: (use kubectl version)
• OS (e.g. from /etc/os-release):

[jschoone]

Seems like there is no official support from Cilium, cinder-csi and occm for 1.31 yet.

[garloff]

This has all changed, so we should be able to publish a 1.31 ...