Add porridge to kubernetes-sigs

[porridge]

I'm already member of the kubernetes org, and the request form says I can add myself directly to other orgs:

Please note, if you are already part of any Kubernetes GitHub organization like kubernetes-sigs and you are filing this request to be added to kubernetes, you do not need to open this request and can add yourself directly! The org memberships are now equivalent and sponsorship is not needed to join additional Kubernetes GitHub orgs.

[k8s-ci-robot]

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This pull-request has been approved by: porridge
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• config/kubernetes-sigs/OWNERS

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[Priyankasaggu11929]

Thanks for the PR @porridge.

Could you please update the commit message to Add porridge to kubernetes-sigs

---

Just for note on the PR - existing org membership is here -

org/config/kubernetes/org.yaml

Line 805 in 8c54181

- porridge