update kubernetes dependency to 1.30

[Madhu-1]

Kubernetes 1.30 is released https://kubernetes.io/blog/2024/04/17/kubernetes-v1-30-release/ let's make use of it in cephcsi

• Make Kubernetes E2E test mandatory in CI Run
• Update Mergify rules to consider tests on kube 1.30
• Drop un maintained kube releases
• go dependency update
• Readme update

[github-actions]

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