chore(deps): update reactiveui to 23.1.8 (#881)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Directory.Packages.props

@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup Label="Core packages">
-    <PackageVersion Include="ReactiveUI" Version="23.1.1" />
-    <PackageVersion Include="ReactiveUI.AndroidX" Version="23.1.1" />
+    <PackageVersion Include="ReactiveUI" Version="23.1.8" />
+    <PackageVersion Include="ReactiveUI.AndroidX" Version="23.1.8" />
     <PackageVersion Include="Polyfill" Version="9.22.0" />
     <PackageVersion Include="System.Collections.Immutable" Version="10.0.3" />
     <PackageVersion Include="Xamarin.Google.Android.Material" Version="1.13.0.1" />

src/samples/Directory.Packages.props

@@ -10,7 +10,7 @@
     <PackageVersion Include="MessageBox.Avalonia" Version="3.3.1.1" />
     <PackageVersion Include="ReactiveUI.SourceGenerators" Version="2.6.1" />
     <PackageVersion Include="MahApps.Metro" Version="2.4.11" />
-    <PackageVersion Include="ReactiveUI.WPF" Version="23.1.1" />
-    <PackageVersion Include="ReactiveUI.WinForms" Version="23.1.1" />
+    <PackageVersion Include="ReactiveUI.WPF" Version="23.1.8" />
+    <PackageVersion Include="ReactiveUI.WinForms" Version="23.1.8" />
   </ItemGroup>
 </Project>