Bump @fortawesome/fontawesome-free from 6.3.0 to 6.4.0

Bumps [@fortawesome/fontawesome-free](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/fontawesome-free"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -7,7 +7,7 @@
     "@babel/preset-env": "7",
     "@babel/runtime": "7",
     "@egjs/hammerjs": "^2.0.17",
-    "@fortawesome/fontawesome-free": "^6.2.1",
+    "@fortawesome/fontawesome-free": "^6.4.0",
     "@popperjs/core": "^2.11.7",
     "@sentry/browser": "^7.11.1",
     "@webpack-cli/serve": "^2.0.1",