refactor: use slices.Equal to simplify code

[houpo-bob]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

In the Go 1.21 standard library, a new function has been introduced that enhances code conciseness and readability. It can be find here.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

[linux-foundation-easycla]

• ✅login: houpo-bob / (de8d25f)

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[houpo-bob]

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Signed.

[houpo-bob]

friendly ping

[TessaIO]

LGTM. thanks

[TessaIO]

leaving final approval to @cdrage

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cdrage, houpo-bob, TessaIO

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[cdrage]

Thank you for the contribution! Merging :)