Upgrade github.com/prometheus/client_golang to help unblock dependabot.

[jkh52]

Help unblock dependabot and enable the 0.31 release.

$ go get github.com/prometheus/client_golang@v1.20.4
$ go mod tidy
$ go mod vendor

Fix test fallout.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jkh52

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [jkh52]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[jkh52]

/assign @cheftako

[cheftako]

/test pull-apiserver-network-proxy-make-lint-master

[cheftako]

Rerunning lint to see if the new kubekins image has helped with the lint error.

[cheftako]

/test pull-apiserver-network-proxy-make-lint-master

[k8s-ci-robot]

@jkh52: 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-apiserver-network-proxy-make-lint-master	7b3f04c	link	true	/test pull-apiserver-network-proxy-make-lint-master

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.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[bwplotka]

FYI: We reverted the problematic change in https://github.com/prometheus/client_golang/releases/tag/v1.20.5, sorry for pain!

[jkh52]

FYI: We reverted the problematic change in https://github.com/prometheus/client_golang/releases/tag/v1.20.5, sorry for pain!

Thanks for the heads up! I verified that v1.20.5 resolves our dependabot issue. I will close this workaround PR.