Bumped up target build version to 1.3.0 for release

Author: mysticmind

appveyor.yml

@@ -9,7 +9,7 @@ skip_tags: true
 environment:
   DOTNET_CLI_TELEMETRY_OPTOUT: true
   DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
-  TARGET_BUILD_VERSION: '1.2.0'
+  TARGET_BUILD_VERSION: '1.3.0'
 
 nuget:
   disable_publish_on_pr: true