update k/release prow jobs to use go1.21

[cpanato]

• update k/release prow jobs to use go1.21

xref: kubernetes/release#3366

/assign @xmudrii @saschagrunert
cc @kubernetes/release-engineering

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cpanato, saschagrunert, xmudrii

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Needs approval from an approver in each of these files:

• config/jobs/kubernetes/release/OWNERS [cpanato,saschagrunert,xmudrii]

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[k8s-ci-robot]

@cpanato: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

• key release-config.yaml using file config/jobs/kubernetes/release/release-config.yaml

Details

In response to this:

• update k/release prow jobs to use go1.21

xref: kubernetes/release#3366

/assign @xmudrii @saschagrunert
cc @kubernetes/release-engineering

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