Fix typehint for examples.py

Author: PProfizi

src/ansys/dpf/core/examples/examples.py

@@ -29,7 +29,7 @@
 from ansys.dpf.core.core import upload_file_in_tmp_folder
 
 
-def get_example_required_minimum_dpf_version(file: os.PathLike) -> str:
+def get_example_required_minimum_dpf_version(file: str) -> str:
     """Return the minimal DPF server version required to run the example, as declared in a note.
 
     Parameters