Update github.com/prometheus/client_golang to v1.11.1

[maya-r]

Meant to address a denial of service vulnerability CVE-2022-21698
GHSA-cg3q-j54f-5p7p

Release note:

Update github.com/prometheus/client_golang to v1.11.1 as it contains a security fix

[awels]

/lgtm
/approve

[kubevirt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: awels

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[maya-r]

/cherry-pick release-v0.12

[kubevirt-bot]

@maya-r: #108 failed to apply on top of branch "release-v0.12":

Applying: Update github.com/prometheus/client_golang to v1.11.1
Using index info to reconstruct a base tree...
M	go.mod
M	go.sum
M	vendor/modules.txt
Falling back to patching base and 3-way merge...
Auto-merging vendor/modules.txt
Auto-merging go.sum
Auto-merging go.mod
CONFLICT (content): Merge conflict in go.mod
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Update github.com/prometheus/client_golang to v1.11.1
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherry-pick release-v0.12

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