Bump golangci-lint to v1.56.1

[adityabhatia]

Bump golangci-lint to the latest minor release v1.56.0 v1.56.1

The release notes are here: https://github.com/golangci/golangci-lint/releases/tag/v1.56.1

[sbueringer]

/help

[k8s-ci-robot]

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[adityabhatia]

/assign