fix(deps): update dependency com.structurizr:structurizr-core to v1.20.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.structurizr:structurizr-core	1.19.0 -> 1.20.1

---

Release Notes

structurizr/java

v1.20.1

• ViewSet.getViews() now includes all views.
• ViewSet.getViewWithKey() is now public.

v1.20.0

• Breaking change: Renamed com.structurizr.view.View to com.structurizr.view.ModelView.
• Added support for "image views".
• Added a Window shape.
• ThemeUtils.toJson() now includes the workspace branding logo and font in the resulting theme.

---

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 has been generated by Mend Renovate. View repository job log here.