Update dependency com.puppycrawl.tools:checkstyle to v12.1.0

This MR contains the following updates:

Package	Change	Age	Confidence
com.puppycrawl.tools:checkstyle (source)	12.0.1 -> 12.1.0

---

⚠️ Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

---

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 MR is behind base branch, or you tick the rebase/retry checkbox.

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

---

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

---

This MR has been generated by Renovate Bot.