⬆️ Upgrade Rust crate iced_font_awesome to 0.3.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
iced_font_awesome	dependencies	minor	0.2.1 -> 0.3.0

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✅ All modified and coverable lines are covered by tests.
see 2 files with indirect coverage changes

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[Hirschfuchs]

I will check if all icons are still working

[Hirschfuchs]

The new version contains the new Font Awesome 7 icons. All icons are still working as expected and the update can be merged.