Update version to 1.2.2.0

Author: chrimc62

CSharp/Library/Properties/AssemblyInfo.cs

@@ -33,8 +33,8 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.2.1.0")]
-[assembly: AssemblyFileVersion("1.2.1.0")]
+[assembly: AssemblyVersion("1.2.2.0")]
+[assembly: AssemblyFileVersion("1.2.2.0")]
 
 [assembly: InternalsVisibleTo("Microsoft.Bot.Builder.Tests")]
 [assembly: InternalsVisibleTo("Microsoft.Bot.Sample.Tests")]