Bump Avalonia.LinuxFramebuffer from 0.10.12 to 0.10.18 (#89)

Bumps [Avalonia.LinuxFramebuffer](https://github.com/AvaloniaUI/Avalonia) from 0.10.12 to 0.10.18.
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](https://github.com/AvaloniaUI/Avalonia/compare/0.10.12...0.10.18)

---
updated-dependencies:
- dependency-name: Avalonia.LinuxFramebuffer
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/Citrus.Avalonia.Sandbox/Citrus.Avalonia.Sandbox.csproj

@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Avalonia" Version="0.10.18" />
     <PackageReference Include="Avalonia.ReactiveUI" Version="0.10.18" />
-    <PackageReference Include="Avalonia.LinuxFramebuffer" Version="0.10.12" />
+    <PackageReference Include="Avalonia.LinuxFramebuffer" Version="0.10.18" />
     <PackageReference Include="Avalonia.Desktop" Version="0.10.18" />
     <PackageReference Include="ReactiveUI.Validation" Version="3.0.1" />
     <PackageReference Include="ReactiveUI.Fody" Version="18.3.1" />