the block confidential script is not blocking the kubeconfig file

Hello experts,

We are using the platform samples the block confidential pre-receive script in our environment. It was working as expected.
but when we scanned the GitHub data , we could identify that the kubeconfig files are not getting blocked.

Could you please suggest us to add the best regex to find the kubeconfig file and block it through pre-receive script..

Start by locating the platform sample's block confidential pre-receive script and read how its existing secret patterns are matched. Reproduce the scan with a kubeconfig file, then add coverage for that input and confirm the hook rejects it without breaking existing confidential-file checks.

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