Fix mypy

astronomer/providers/core/hooks/astro.py

@@ -77,7 +77,7 @@ def get_dag_runs(self, external_dag_id: str) -> list[dict[str, str]]:
         url = f"{base_url}{path}"
         response = requests.get(url, headers=self._headers, params=params)
         response.raise_for_status()
-        data: dict[str, list] = response.json()
+        data: dict[str, list[dict[str, str]]] = response.json()
         return data["dag_runs"]
 
     def get_dag_run(self, external_dag_id: str, dag_run_id: str) -> dict[str, Any] | None: