Update dependency NUnit to v4 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
NUnit (source)	3.14.0 -> 4.0.1

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Release Notes

nunit/nunit (NUnit)

### [`v4.0.1`](https://togithub.com/nunit/nunit/releases/tag/v4.0.1): NUnit 4.0.1 Patch release to fix windows targets See [release notes](https://docs.nunit.org/articles/nunit/release-notes/framework.html#nunit-401---december-2-2023) and See [migration guide](https://docs.nunit.org/articles/nunit/release-notes/Nunit4.0-MigrationGuide.html) ### [`v4.0.0`](https://togithub.com/nunit/nunit/blob/HEAD/CHANGES.md#NUnit-400---November-26-2023) All changes, see [release notes](https://docs.nunit.org/articles/nunit/release-notes/framework.html#nunit-400)

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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