Switching to image with Visual Studio 2019 (https://www.appveyor.com/…

…docs/windows-images-software/)

as recommended (https://help.appveyor.com/discussions/problems/27596-ci-fails-with-memory-issues-on-some-vmsprojects).

appveyor.yml

@@ -1,4 +1,4 @@
-os: Windows Server 2012 R2
+os: Windows Server 2019 
 
 environment:
   SMINGTOOLS: https://github.com/SmingHub/SmingTools/releases/download/1.0
@@ -18,5 +18,5 @@ install:
 build_script:
   - cmd: .appveyor/build.cmd
 
-on_finish:
-  - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+#on_finish:
+#  - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))