fix(ci): repair baseline checks

crates/dbx-cli/src/main.rs

@@ -1082,6 +1082,15 @@ mod tests {
             Ok(config)
         }
 
+        async fn duplicate_connection_for_mcp(
+            &self,
+            _source_id: &str,
+            _copy_id: &str,
+            _copy_name: &str,
+        ) -> Result<ConnectionConfig, String> {
+            Err("not exercised".to_string())
+        }
+
         async fn remove_connection_for_mcp(&self, _connection_id: &str) -> Result<bool, String> {
             Ok(true)
         }