Update dependency @fortawesome/fontawesome-free to v7 (#325)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -17,7 +17,7 @@
   "dependencies": {
     "@creativecommons/vocabulary": "2020.11.3",
     "@fancyapps/ui": "6.0.17",
-    "@fortawesome/fontawesome-free": "6.7.2",
+    "@fortawesome/fontawesome-free": "7.0.0",
     "@next-theme/pjax": "0.6.0",
     "algoliasearch": "5.34.1",
     "animate.css": "3.1.1",