.NET update autogen 0.2.2 -> autogen 0.2.3 (#6257)

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dotnet/eng/MetaInfo.props

@@ -2,7 +2,7 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
     <PropertyGroup>
         <VersionPrefix>0.4.0</VersionPrefix>
-        <VersionPrefixForAutoGen0_2>0.2.2</VersionPrefixForAutoGen0_2>
+        <VersionPrefixForAutoGen0_2>0.2.3</VersionPrefixForAutoGen0_2>
         <Authors>Microsoft</Authors>
         <PackageProjectUrl>https://microsoft.github.io/autogen-for-net/</PackageProjectUrl>
         <RepositoryUrl>https://github.com/microsoft/autogen</RepositoryUrl>