vendor: bump k8s to 1.27.3 version

[Tal-or]

• bump k8s 1.27.3
• remove vendor from gitignore (having vendor as part of the source code)
• bump go to 1.20

[Tal-or]

/cc @jmencak

[openshift-ci[bot]]

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In response to [this](https://github.com/openshift-kni/debug-tools/pull/79#issuecomment-1632045389): >/cc @jmencak Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[ffromani]

/lgtm /approve

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ffromani, Tal-or

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[ffromani]

/lgtm

[ffromani]

still vendoring issues

[Tal-or]

still vendoring issues

Those are the outcomes of IDE's glitch. i'll repush

[ffromani]

let's do another rebase, then CI should finally be happy!

[ffromani]

/lgtm