Update dependency FluentAvaloniaUI to 3.1.0 (#21)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [FluentAvaloniaUI](https://github.com/amwx/FluentAvalonia) | `3.0.2` → `3.1.0` | ![age](https://developer.mend.io/api/mc/badges/age/nuget/FluentAvaloniaUI/3.1.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/FluentAvaloniaUI/3.0.2/3.1.0?slim=true) |

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Reviewed-on: https://git.ryujinx.app/projects/Kenji-NX/pulls/21

Directory.Packages.props

@@ -15,7 +15,7 @@
     <PackageVersion Include="Concentus" Version="2.2.2" />
     <PackageVersion Include="DiscordRichPresence" Version="1.6.1.70" />
     <PackageVersion Include="DynamicData" Version="9.4.33" />
-    <PackageVersion Include="FluentAvaloniaUI" Version="3.0.2" />
+    <PackageVersion Include="FluentAvaloniaUI" Version="3.1.0" />
     <PackageVersion Include="Gommon" Version="2.8.1.2" />
     <PackageVersion Include="Humanizer" Version="3.0.10" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" />