⬆️ Bump @types/wicg-file-system-access in /frontend

Bumps [@types/wicg-file-system-access](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/wicg-file-system-access) from 2020.9.6 to 2020.9.8.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/wicg-file-system-access)

---
updated-dependencies:
- dependency-name: "@types/wicg-file-system-access"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

frontend/package.json

@@ -29,7 +29,7 @@
     "@types/node": "^20.6.3",
     "@types/requestidlecallback": "^0.3.5",
     "@types/uuid": "^9.0.4",
-    "@types/wicg-file-system-access": "^2020.9.6",
+    "@types/wicg-file-system-access": "^2020.9.8",
     "concurrently": "^8.2.1",
     "cypress": "^13.2.0",
     "devcert": "^1.2.2",