Update gen.yaml (#142)

Author: dcoplowe

sync-for-expenses/gen.yaml

@@ -17,7 +17,7 @@ features:
     globalServerURLs: 2.82.0
     nameOverrides: 2.81.1
 csharp:
-  version: 2.1.0
+  version: 3.0.0
   author: Codat
   description: Push expenses to accounting platforms.
   dotnetVersion: net6.0