Update Ray to the latest version

[Fokko]

Feature Request / Improvement

It seems that the updates of Ray fail because we set None to the working directory in the test fixtures: #3313

==================================== ERRORS ====================================
_____________ ERROR at setup of test_ray_nan[session_catalog_hive] _____________

    @pytest.fixture(scope="session")
    def ray_session() -> Generator[Any, None, None]:
        """Fixture to manage Ray initialization and shutdown for tests."""
        import ray
    
>       ray.init(
            ignore_reinit_error=True,
            runtime_env={"working_dir": None},  # Prevent Ray from serializing the working directory to workers
        )

tests/conftest.py:3037: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.venv/lib/python3.12/site-packages/ray/_private/client_mode_hook.py:107: in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
.venv/lib/python3.12/site-packages/ray/_private/worker.py:1798: in init
    runtime_env = _maybe_modify_runtime_env(runtime_env, _skip_env_hook)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.venv/lib/python3.12/site-packages/ray/_private/worker.py:1396: in _maybe_modify_runtime_env
    return hook(runtime_env)
           ^^^^^^^^^^^^^^^^^
.venv/lib/python3.12/site-packages/ray/_private/runtime_env/uv_runtime_env_hook.py:411: in hook
    if _is_path(working_dir):
       ^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

path_or_uri = None

    def _is_path(path_or_uri: str) -> bool:
        """Returns True if uri_or_path is a path and False otherwise.
    
        IMPORTANT: This is a duplicate of ray._private.path_utils.is_path().
    
        Why we can't import from path_utils:
        - This hook runs via `uv run --no-project uv_runtime_env_hook.py` in test scenarios
        - UV creates a minimal environment without dependencies installed yet
        - Importing from ray._private.path_utils triggers the full Ray import chain:
          ray._private.path_utils → ray/__init__.py → ray._private.worker →
          ray.widgets → ray.widgets.util → packaging.version
        - The 'packaging' module is not available in the minimal UV environment,
          causing: ModuleNotFoundError: No module named 'packaging.version'
    
        This duplicate implementation uses only stdlib (pathlib, urllib.parse)
        to avoid the dependency issue. If you modify this function, ensure you
        also update ray._private.path_utils.is_path() to keep them in sync.
        """
        if not isinstance(path_or_uri, str):
>           raise TypeError(f"path_or_uri must be a string, got {type(path_or_uri)}.")
E           TypeError: path_or_uri must be a string, got <class 'NoneType'>.

I think it would be better to set it to a temporary directory, like /tmp/ on unix based filesystems. We can leverage tmp_path here: https://docs.pytest.org/en/stable/how-to/tmp_path.html