Update to newest released UWP package.

Author: michael-hawker

GazeInputTest/GazeInputTest.csproj

@@ -150,7 +150,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
     <PackageReference Include="StyleCop.Analyzers">
       <Version>1.0.2</Version>

Microsoft.Toolkit.Uwp.SampleApp/Microsoft.Toolkit.Uwp.SampleApp.csproj

@@ -107,7 +107,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Services.Store.Engagement">
       <Version>10.1901.28001</Version>

Microsoft.Toolkit.Uwp.Samples.BackgroundTasks/Microsoft.Toolkit.Uwp.Samples.BackgroundTasks.csproj

@@ -109,7 +109,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
   </ItemGroup>
   <ItemGroup>

UITests/UITests.App/UITests.App.csproj

@@ -168,7 +168,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
     <PackageReference Include="MUXAppTestHelpers">
       <Version>0.0.4</Version>

UnitTests/UnitTests.HighPerformance.UWP/UnitTests.HighPerformance.UWP.csproj

@@ -151,7 +151,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
     <PackageReference Include="MSTest.TestAdapter">
       <Version>2.1.2</Version>

UnitTests/UnitTests.Notifications.UWP/UnitTests.Notifications.UWP.csproj

@@ -124,7 +124,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
     <PackageReference Include="MSTest.TestAdapter">
       <Version>2.1.2</Version>

UnitTests/UnitTests.UWP/UnitTests.UWP.csproj

@@ -111,7 +111,7 @@
       <Version>5.10.3</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
     <PackageReference Include="MSTest.TestAdapter">
       <Version>2.1.2</Version>

UnitTests/UnitTests.XamlIslands.UWPApp/UnitTests.XamlIslands.UWPApp.csproj

@@ -167,7 +167,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.11</Version>
+      <Version>6.2.12</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Win32.UI.XamlApplication">
       <Version>6.1.2</Version>