Site: Update hugo from v0.121.1 to v0.121.2

[minikube-bot]

The hugo project released a new version

This PR was auto-generated by make update-hugo-version using update-hugo-version.yml CI Workflow.

[k8s-ci-robot]

Hi @minikube-bot. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: minikube-bot, spowelljr

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