Updating ExtensionsMetadataGenerator to 1.2.0

src/Microsoft.NET.Sdk.Functions.MSBuild/Targets/ExtensionsMetadataGeneratorVersion.props

@@ -11,7 +11,7 @@ WARNING:  DO NOT MODIFY this file unless you are knowledgeable about MSBuild and
 <Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <PropertyGroup>
-    <ExtensionsMetadataGeneratorVersion>1.1.8</ExtensionsMetadataGeneratorVersion>
+    <ExtensionsMetadataGeneratorVersion>1.2.0</ExtensionsMetadataGeneratorVersion>
   </PropertyGroup>
 
 </Project>