update manifest

Beckman.Snippets/source.extension.vsixmanifest

 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
-    <Identity Id="Beckman.Snippets.Andrew Reynolds.554a17d5-acf8-469c-ad75-060f99bab879" Version="1.2.2" Language="en-US" Publisher="Andrew Reynolds" />
+    <Identity Id="Beckman.Snippets.Andrew Reynolds.554a17d5-acf8-469c-ad75-060f99bab879" Version="1.2.3" Language="en-US" Publisher="Andrew Reynolds" />
     <DisplayName>Beckman Snippets</DisplayName>
     <Description xml:space="preserve">Visual Studio code snippets commonly used in Beckman projects.</Description>
     <MoreInfo>http://madskristensen.net/post/shipping-visual-studio-snippets-in-an-extension</MoreInfo>