Bump khill/fontawesomephp from 1.1.5 to 2.0

Bumps [khill/fontawesomephp](https://github.com/kevinkhill/FontAwesomePHP) from 1.1.5 to 2.0.
- [Release notes](https://github.com/kevinkhill/FontAwesomePHP/releases)
- [Commits](kevinkhill/FontAwesomePHP@1.1.5...2.0)

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

Author: dependabot-preview[bot]

composer.json

@@ -20,7 +20,7 @@
         "gentle/bitbucket-api": "dev-develop",
         "guzzlehttp/guzzle": "^6.3",
         "guzzlehttp/oauth-subscriber": "^0.3",
-        "khill/fontawesomephp": "^1.0",
+        "khill/fontawesomephp": "^2.0",
         "laravel/framework": "5.8.*",
         "laravel/slack-notification-channel": "^2.0",
         "laravel/tinker": "^1.0",