Update dependency org.apache.maven.plugins:maven-war-plugin to v3 (master)

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apache.maven.plugins:maven-war-plugin	2.6 -> 3.4.0

---

[!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 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