Bump @fortawesome/fontawesome-free in /samples/lib/spa-angular-client

Bumps [@fortawesome/fontawesome-free](https://github.com/FortAwesome/Font-Awesome) from 5.15.4 to 6.1.1.
- [Release notes](https://github.com/FortAwesome/Font-Awesome/releases)
- [Changelog](https://github.com/FortAwesome/Font-Awesome/blob/6.x/CHANGELOG.md)
- [Commits](FortAwesome/Font-Awesome@5.15.4...6.1.1)

---
updated-dependencies:
- dependency-name: "@fortawesome/fontawesome-free"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

samples/lib/spa-angular-client/package-lock.json

@@ -27,7 +27,7 @@
     "@angular/platform-browser": "^13.0.3",
     "@angular/platform-browser-dynamic": "^13.0.3",
     "@angular/router": "^13.0.3",
-    "@fortawesome/fontawesome-free": "^5.15.4",
+    "@fortawesome/fontawesome-free": "^6.1.1",
     "@ng-bootstrap/ng-bootstrap": "^11.0.0",
     "bootstrap": "^4.6.0",
     "bowser": "^2.11.0",