fix: silence the output

Author: narenaryan

main.go

@@ -279,13 +279,15 @@ func newRootCmd() *cobra.Command {
 			if err := validateUpgradeInput(input, fromVersion); err != nil {
 				cmd.SetOut(cmd.ErrOrStderr())
 				_ = cmd.Usage()
+				cmd.SilenceUsage = true
 				return err
 			}
 
 			action, refOrSHA, err := splitActionRef(input)
 			if err != nil {
 				cmd.SetOut(cmd.ErrOrStderr())
 				_ = cmd.Usage()
+				cmd.SilenceUsage = true
 				return err
 			}