Work CD-CI

- Update target framework in nuspec.

Author: josesimoes

MetadataProcessor.Core/package.nuspec

@@ -25,7 +25,7 @@
     </dependencies>
   </metadata>
   <files>
-    <file src="bin\Release\nanoFramework.Tools.MetadataProcessor.Core.dll" target="lib/net461" />
+    <file src="bin\Release\nanoFramework.Tools.MetadataProcessor.Core.dll" target="lib/net472" />
     <file src="nanoFramework.Tools.MetaDataProcessor.Core.targets" target="build" />
     <file src="..\nf-logo.png" target="images\" />
     <file src="..\LICENSE.md" target="" />