chore(deps): Bump focus-trap in /build/frontend-legacy

Bumps [focus-trap](https://github.com/focus-trap/focus-trap) from 7.8.0 to 8.0.0.
- [Release notes](https://github.com/focus-trap/focus-trap/releases)
- [Changelog](https://github.com/focus-trap/focus-trap/blob/master/CHANGELOG.md)
- [Commits](https://github.com/focus-trap/focus-trap/compare/v7.8.0...v8.0.0)

---
updated-dependencies:
- dependency-name: focus-trap
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

build/frontend-legacy/package.json

@@ -64,7 +64,7 @@
     "debounce": "^3.0.0",
     "dompurify": "^3.3.1",
     "escape-html": "^1.0.3",
-    "focus-trap": "^7.8.0",
+    "focus-trap": "^8.0.0",
     "handlebars": "^4.7.8",
     "is-svg": "^6.1.0",
     "jquery": "~3.7",