build(deps): update ReactiveUI requirement from 18.* to 19.* in /samp…

…les (#542)

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

samples/LoginApp.Uwp/LoginApp.Uwp.csproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -149,7 +149,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.2.14" />
-    <PackageReference Include="ReactiveUI" Version="18.*" />
+    <PackageReference Include="ReactiveUI" Version="19.*" />
     <PackageReference Include="ReactiveUI.Uwp">
       <Version>18.4.1</Version>
     </PackageReference>

samples/LoginApp/LoginApp.csproj

@@ -1,10 +1,10 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="18.*" />
+    <PackageReference Include="ReactiveUI" Version="19.*" />
     <PackageReference Include="ReactiveUI.Fody" Version="18.*" />
     <PackageReference Include="ReactiveUI.Validation" Version="3.*" />
   </ItemGroup>