Bump @fortawesome/free-solid-svg-icons from 6.3.0 to 6.4.0 in /admin

Bumps [@fortawesome/free-solid-svg-icons](https://github.com/FortAwesome/Font-Awesome) from 6.3.0 to 6.4.0.
- [Release notes](https://github.com/FortAwesome/Font-Awesome/releases)
- [Changelog](https://github.com/FortAwesome/Font-Awesome/blob/6.x/CHANGELOG.md)
- [Commits](https://github.com/FortAwesome/Font-Awesome/compare/6.3.0...6.4.0)

---
updated-dependencies:
- dependency-name: "@fortawesome/free-solid-svg-icons"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

admin/package.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "@fortawesome/fontawesome-svg-core": "^6.4.0",
-    "@fortawesome/free-solid-svg-icons": "^6.3.0",
+    "@fortawesome/free-solid-svg-icons": "^6.4.0",
     "@fortawesome/react-fontawesome": "^0.2.0",
     "md5": "^2.3.0",
     "react": "^18.2.0",