add generated files to coverage ignore list

Author: Jin Huang

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
         path-to-profile: profile.cov
         flag-name: Go-${{ matrix.go-version }}
         parallel: true
-        ignore: zendesk/mock/client.go
+        ignore: zendesk/mock/client.go, zendesk/*_generated.go
 
   finalize:
     needs: test