Bump @fortawesome/fontawesome-free from 6.6.0 to 6.7.1 in /vendor

Bumps [@fortawesome/fontawesome-free](https://github.com/FortAwesome/Font-Awesome) from 6.6.0 to 6.7.1.
- [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@6.6.0...6.7.1)

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

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

Author: dependabot[bot]

vendor/package-lock.json

@@ -11,7 +11,7 @@
 	},
 	"license": "MIT",
 	"dependencies": {
-		"@fortawesome/fontawesome-free": "^6.6.0",
+		"@fortawesome/fontawesome-free": "^6.7.1",
 		"animate.css": "^4.1.1",
 		"croner": "^9.0.0",
 		"moment": "^2.30.1",