Bump ReactiveUI.Fody from 9.11.3 to 9.18.2 (#43)

Bumps [ReactiveUI.Fody](https://github.com/reactiveui/reactiveui) from 9.11.3 to 9.18.2.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](https://github.com/reactiveui/reactiveui/compare/9.11.3...9.18.2)

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

razor/ReactiveUI.RazorExample/ReactiveUI.RazorExample.csproj

@@ -10,7 +10,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Components.Server" Version="3.0.0-preview3-19153-02" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.0.0-preview3-19153-02" />
     <PackageReference Include="ReactiveUI" Version="9.18.2" />
-    <PackageReference Include="ReactiveUI.Fody" Version="9.11.3" />
+    <PackageReference Include="ReactiveUI.Fody" Version="9.18.2" />
   </ItemGroup>
 
 </Project>