chore(cli): use cli.Cancelled when cancellikng the command to return non-zero exit code in all cases (#406)

Use `cli.Cancelled` in all cases where we cancel an operation instead of Printf && return nil

Signed-off-by: Miek Gieben <miek@miek.nl>

cmd/uc/volume/rm.go

@@ -92,8 +92,7 @@ func remove(ctx context.Context, uncli *cli.CLI, names []string, opts removeOpti
 			return fmt.Errorf("confirm removal: %w", err)
 		}
 		if !confirmed {
-			fmt.Println("Cancelled. No volumes were removed.")
-			return nil
+			return cli.Cancelled("Cancelled. No volumes were removed.")
 		}
 	}