Updated windows SDK 1.5.4 (#111)

Updated windows SDK 1.5.4

Author: nickwinder

samples/Catalog/windows/Catalog/Catalog.csproj

@@ -230,7 +230,7 @@
     <SDKReference Include="Microsoft.VCLibs, Version=14.0">
       <Name>Visual C++ 2015 Runtime for Universal Windows Platform Apps</Name>
     </SDKReference>
-    <SDKReference Include="PSPDFKitSDK, Version=1.5.2">
+    <SDKReference Include="PSPDFKitSDK, Version=1.5.4">
       <Name>PSPDFKit for UWP</Name>
     </SDKReference>
   </ItemGroup>

windows/ReactNativePSPDFKit/ReactNativePSPDFKit/ReactNativePSPDFKit.csproj

@@ -131,7 +131,7 @@
     <SDKReference Include="Microsoft.VCLibs, Version=14.0">
       <Name>Visual C++ 2015 Runtime for Universal Windows Platform Apps</Name>
     </SDKReference>
-    <SDKReference Include="PSPDFKitSDK, Version=1.5.2">
+    <SDKReference Include="PSPDFKitSDK, Version=1.5.4">
       <Name>PSPDFKit for UWP</Name>
     </SDKReference>
   </ItemGroup>