fix(deps): update gwtversion to v2.12.1

This MR contains the following updates:

Package	Type	Update	Change
org.gwtproject:gwt (source)	import	patch	2.12.0 -> 2.12.1
org.gwtproject:gwt-dev (source)	provided	patch	2.12.0 -> 2.12.1
org.gwtproject:gwt-user (source)	compile	patch	2.12.0 -> 2.12.1

---

⚠ 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 becomes conflicted, or you tick the rebase/retry checkbox.

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

---

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

---

This MR has been generated by Renovate Bot.