Update golangci-lint to v2

[divyansh42]

Changes

Follow up changes after PR #2559 to include few fixes in the .golangci file as well as update the golangci-lint to use v2 version.

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
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• Includes tests (if functionality changed/added)
• Run the code checkers with make check
• Regenerate the manpages, docs and go formatting with make generated
• Commit messages follow commit message best practices

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Release Notes

[chmouel]

/lgtm

[divyansh42]

/cc @vdemeester @pratap0007

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[divyansh42]

/release-note-none

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[divyansh42]

/release-note-none