Appveyor: use WinSDK 10.0.19041.0

Author: TheMostDiligent

appveyor.yml

@@ -1,4 +1,4 @@
-version: '2.5.{build}'
+version: '2.6.{build}'
 
 # branches to build
 branches:
@@ -36,7 +36,7 @@ before_build:
   - echo add_subdirectory(DiligentTools) >> CMakeLists.txt
   - echo add_subdirectory(DiligentFX) >> CMakeLists.txt
   - echo %PLATFORM%
-  - cmake -S . -B ./build -D DILIGENT_MSVC_COMPILE_OPTIONS="/WX" -D DILIGENT_MSVC_RELEASE_COMPILE_OPTIONS="/arch:AVX2" -G "Visual Studio 16 2019" -A %PLATFORM%
+  - cmake -S . -B ./build -D DILIGENT_MSVC_COMPILE_OPTIONS="/WX" -D DILIGENT_MSVC_RELEASE_COMPILE_OPTIONS="/arch:AVX2" -D CMAKE_SYSTEM_VERSION=10.0.19041.0 -G "Visual Studio 16 2019" -A %PLATFORM%
 
 build:
   project: c:\projects\build\DiligentFX_Test.sln