[3.4] Update golang toolchain to 1.22.12

[marcelfranca]

Updates goland toolchain to 1.22.12

Subtask of #19333

[k8s-ci-robot]

Hi @marcelfranca. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[ivanvc]

/retitle [3.4] Update golang toolchain to 1.22.12
/ok-to-test

[ivanvc]

Can someone manually approve the workflows from this PR? @jmhbnz, @serathius, @ahrtr

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, marcelfranca

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