build(deps): update ReactiveUI requirement from 14.* to 15.* in /samp…

…les (#338)

Updates the requirements on [ReactiveUI](https://github.com/reactiveui/reactiveui) to permit the latest version.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@14.1.1...15.1.1)

---
updated-dependencies:
- dependency-name: ReactiveUI
  dependency-type: direct:production
...

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

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

samples/LoginApp.Android/LoginApp.Android.csproj

@@ -71,7 +71,7 @@
     <AndroidResource Include="Resources\values\styles.xml" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="14.*" />
+    <PackageReference Include="ReactiveUI" Version="15.*" />
     <PackageReference Include="ReactiveUI.AndroidX" Version="14.*" />
     <PackageReference Include="ReactiveUI.Validation" Version="2.*" />
     <PackageReference Include="ReactiveUI.Validation.AndroidX" Version="2.*" />

samples/LoginApp.Uwp/LoginApp.Uwp.csproj

@@ -148,7 +148,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.2.12" />
-    <PackageReference Include="ReactiveUI" Version="14.*" />
+    <PackageReference Include="ReactiveUI" Version="15.*" />
     <PackageReference Include="ReactiveUI.Validation" Version="2.*" />
   </ItemGroup>
   <ItemGroup>

samples/LoginApp/LoginApp.csproj

@@ -3,7 +3,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="14.*" />
+    <PackageReference Include="ReactiveUI" Version="15.*" />
     <PackageReference Include="ReactiveUI.Fody" Version="14.*" />
     <PackageReference Include="ReactiveUI.Validation" Version="2.*" />
   </ItemGroup>