update golang to 1.20

[vteratipally]

No description provided.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[vteratipally]

/test pull-npd-e2e-kubernetes-gce-gci
/test pull-npd-e2e-kubernetes-gce-ubuntu
/test pull-npd-e2e-kubernetes-gce-gci-custom-flags
/test pull-npd-e2e-kubernetes-gce-ubuntu-custom-flags

[k8s-ci-robot]

@vteratipally: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-npd-e2e-node	ee1ae10	link	true	/test pull-npd-e2e-node

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[vteratipally]

/cc @mmiranda96
/cc @SergeyKanzhelev

The node tests are failing are

 E0204 05:53:32.021794       1 k8s_exporter.go:111] Can't get node object: Get "https://127.0.0.1:6443/api/v1/nodes/tmp-node-e2e-15cc9a12-cos-stable-101-17162-40-56": tls: failed to verify certificate: x509: certificate signed by unknown authority```

Any idea about this error?

[k8s-ci-robot]

PR needs rebase.

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[SergeyKanzhelev]

is it covered in #739?

/close

[k8s-ci-robot]

@SergeyKanzhelev: Closed this PR.

In response to this:

is it covered in #739?

/close

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