build(deps): Bump @nextcloud/files in /build/frontend-legacy

Bumps [@nextcloud/files](https://github.com/nextcloud-libraries/nextcloud-files) from 4.0.0-beta.4 to 4.0.0-beta.5.
- [Release notes](https://github.com/nextcloud-libraries/nextcloud-files/releases)
- [Changelog](https://github.com/nextcloud-libraries/nextcloud-files/blob/main/CHANGELOG.md)
- [Commits](nextcloud-libraries/nextcloud-files@v4.0.0-beta.4...v4.0.0-beta.5)

---
updated-dependencies:
- dependency-name: "@nextcloud/files"
  dependency-version: 4.0.0-beta.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build/frontend-legacy/package-lock.json

@@ -34,7 +34,7 @@
     "@nextcloud/capabilities": "^1.2.1",
     "@nextcloud/dialogs": "^7.1.0",
     "@nextcloud/event-bus": "^3.3.3",
-    "@nextcloud/files": "^4.0.0-beta.4",
+    "@nextcloud/files": "^4.0.0-beta.5",
     "@nextcloud/initial-state": "^3.0.0",
     "@nextcloud/l10n": "^3.4.1",
     "@nextcloud/logger": "^3.0.3",