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

Bumps [focus-trap](https://github.com/focus-trap/focus-trap) from 8.0.1 to 8.2.1.
- [Release notes](https://github.com/focus-trap/focus-trap/releases)
- [Changelog](https://github.com/focus-trap/focus-trap/blob/master/CHANGELOG.md)
- [Commits](focus-trap/focus-trap@v8.0.1...v8.2.1)

---
updated-dependencies:
- dependency-name: focus-trap
  dependency-version: 8.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build/frontend-legacy/package-lock.json

@@ -66,7 +66,7 @@
     "debounce": "^3.0.0",
     "dompurify": "^3.4.7",
     "escape-html": "^1.0.3",
-    "focus-trap": "^8.0.1",
+    "focus-trap": "^8.2.1",
     "is-svg": "^6.1.0",
     "libphonenumber-js": "^1.13.4",
     "lodash": "^4.18.1",