1.3.15 appxmanifest update

Author: gregwoo-microsoft

WinUIGallery/Package.WAP.appxmanifest

@@ -6,7 +6,7 @@
     xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
     xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
     IgnorableNamespaces="uap mp uap3">
-  <Identity Name="Microsoft.WinUI3ControlsGallery" Publisher="CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US" Version="1.3.14.0" />
+  <Identity Name="Microsoft.WinUI3ControlsGallery" Publisher="CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US" Version="1.3.15.0" />
   <mp:PhoneIdentity PhoneProductId="863667e0-667a-4bb4-ac52-c59656c7333a" PhonePublisherId="00000000-0000-0000-0000-000000000000" />
   <Properties>
     <DisplayName>WinUI 3 Gallery</DisplayName>