Bump @fortawesome/free-solid-svg-icons from 6.4.0 to 6.4.2

Bumps [@fortawesome/free-solid-svg-icons](https://github.com/FortAwesome/Font-Awesome) from 6.4.0 to 6.4.2.
- [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@6.4.0...6.4.2)

---
updated-dependencies:
- dependency-name: "@fortawesome/free-solid-svg-icons"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -9,7 +9,7 @@
     "@emotion/styled": "^11.11.0",
     "@fortawesome/fontawesome-svg-core": "^6.4.0",
     "@fortawesome/free-regular-svg-icons": "^6.4.0",
-    "@fortawesome/free-solid-svg-icons": "^6.4.0",
+    "@fortawesome/free-solid-svg-icons": "^6.4.2",
     "@fortawesome/react-fontawesome": "^0.2.0",
     "@iarna/toml": "^2.2.5",
     "@mui/material": "^5.14.2",