Bump @fortawesome/fontawesome-free from 6.4.2 to 6.5.1

Bumps [@fortawesome/fontawesome-free](https://github.com/FortAwesome/Font-Awesome) from 6.4.2 to 6.5.1.
- [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@6.4.2...6.5.1)

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

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

package.json

@@ -8,7 +8,7 @@
     "@asciidoctor/core": "^2.2.6",
     "@emotion/react": "^11.11.1",
     "@emotion/styled": "^11.11.0",
-    "@fortawesome/fontawesome-free": "^6.4.2",
+    "@fortawesome/fontawesome-free": "^6.5.1",
     "@gatsbyjs/reach-router": "^2.0.1",
     "@mdx-js/react": "^2.3.0",
     "@mui/lab": "^5.0.0-alpha.164",