Update dependency NUnit to 4.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Confidence
NUnit (source)	4.3.2 -> 4.4.0

---

Release Notes

nunit/nunit (NUnit)

v4.4.0: NUnit 4.4.0

Compare Source

See release notes for details.

---

Configuration

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

---

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

---

This PR was generated by Mend Renovate. View the repository job log.