auto-bumper: Use go-git WA

[oshoval]

What this PR does / why we need it:
Based on the last command here
go-git/go-git#495 (comment)
Fixes the problem of auto bumper
https://github.com/kubevirt/cluster-network-addons-operator/actions/runs/3629947036/jobs/6122730934

INFO: 2022/12/06 13:26:47 Exiting with Error: Failed to clone kube-secondary-dns: Failed to clone git repo for component kube-secondary-dns: Failed to clone kube-secondary-dns repo: reference delta not found

Special notes for your reviewer:

Release note:

None

[kubevirt-bot]

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[kubevirt-bot]

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[sonarcloud]

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