Update dependency sinon to v18

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sinon (source)	17.0.2 -> 18.0.0

---

Release Notes

sinonjs/sinon (sinon)

### [`v18.0.0`](https://togithub.com/sinonjs/sinon/compare/v17.0.2...v18.0.0) [Compare Source](https://togithub.com/sinonjs/sinon/compare/v17.0.2...v18.0.0)

---

Configuration

📅 Schedule: Branch creation - "every weekend" (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 this update 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.