Bump ReactiveUI.WPF from 13.2.10 to 13.2.18

Bumps [ReactiveUI.WPF](https://github.com/reactiveui/reactiveui) from 13.2.10 to 13.2.18.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](https://github.com/reactiveui/reactiveui/compare/13.2.10...13.2.18)

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

Shadowsocks.WPF/Shadowsocks.WPF.csproj

@@ -55,7 +55,7 @@
     <PackageReference Include="ReactiveUI.Events.WPF" Version="13.2.10" />
     <PackageReference Include="ReactiveUI.Fody" Version="13.2.10" />
     <PackageReference Include="ReactiveUI.Validation" Version="2.1.1" />
-    <PackageReference Include="ReactiveUI.WPF" Version="13.2.10" />
+    <PackageReference Include="ReactiveUI.WPF" Version="13.2.18" />
     <PackageReference Include="Splat.NLog" Version="10.0.1" />
     <PackageReference Include="System.CommandLine" Version="2.0.0-beta1.21177.1" />
     <PackageReference Include="System.Reactive" Version="5.0.0" />