Bump uwp to 6.1.4

Author: Trolldemorted

Signal-Windows.Lib/Signal-Windows.Lib.csproj

@@ -181,7 +181,7 @@
       <Version>1.1.4</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.0.1</Version>
+      <Version>6.1.4</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Uwp.Notifications">
       <Version>2.1.1</Version>

Signal-Windows.RC/Signal-Windows.RC.csproj

@@ -112,7 +112,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.0.1</Version>
+      <Version>6.1.4</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Uwp.Notifications">
       <Version>2.1.1</Version>

Signal-Windows/Signal-Windows.csproj

@@ -350,7 +350,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.0.1</Version>
+      <Version>6.1.4</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Uwp.Notifications">
       <Version>2.1.1</Version>