chore(deps): Update .net deps to v4 (major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
NUnit (source)	3.14.0 -> 4.0.1
cake.tool (source)	3.2.0 -> 4.0.0

---

Release Notes

nunit/nunit (NUnit)

v4.0.1: NUnit 4.0.1

Patch release to fix windows targets

See release notes
and
See migration guide

v4.0.0

All changes, see release notes

cake-build/cake (cake.tool)

v4.0.0

• 4266 Update LatestPotentialBreakingChange to 4.0.0.
• 4132 Add File APIs for setting timestamps (creation time, last write time, last access time).
• 4250 Update System.Collections.Immutable to 8.0.0.
• 4260 Unzip alias should support overwrite files.
• 4251 Update System.Reflection.Metadata 8.0.0.
• 4249 Update Microsoft.Extensions.DependencyInjection to 8.0.0.
• 4197 Execution of Cake script fails if an addin defines an alias that uses nullable reference types in its signature.
• 4150 Cake script is contributing unactionable diagnostics in VS Code Problems pane.

---

Configuration

📅 Schedule: Branch creation - "before 4am on Monday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

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

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

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.

[renovate]

Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠ Warning: custom changes will be lost.