[Snyk] Upgrade @fortawesome/fontawesome-free from 6.5.2 to 6.6.0

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Upgrades the font awesome library

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PR Summary

• FontAwesome library version update
  The version of "@fortawesome/fontawesome-free" has been updated from "6.5.2" to "6.6.0". This may include improvements or new features from FontAwesome.

• Improved CSS readability
  The CSS code for multiple files has been reformatted to improve its readability. This makes it easier for others to understand and modify the code.

• Styling updates for the various skins/themes
  The CSS styles for multiple themes of the application - 'black', 'blue', 'contrast', 'green', 'orange', 'purple', 'red', and 'yellow' - have been updated, both in the regular and minimized (.min.css) stylesheet versions. This includes changes to colors (background, text, borders, etc.) and layout for various elements like the navbar, sidebar, dropdown menus, form inputs, and others.

• Update to font files
  Several font files have been modified, but the exact changes aren't clear from the diff because they are binary files.

• Updates to the Mix manifest
  The mix-manifest.json file, which records the versioning information for various assets was updated with new version IDs for multiple JS and CSS files, including those for the skins and fonts.

Overall, this PR mainly focuses on styling updates that enhance the visual experience of application users across different themes or skins. It also includes updates for improved code readability and version upgrades.

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Tests are failing with this but it'a unrelated, so I'm going to merge this one anyway and will open a separate PR for the unrelated tests