chore(cff): use type hint for list from python standard collection

Co-authored-by: Cyril Matthey-Doret <cyril.matthey-doret@epfl.ch>

gimie/parsers/cff.py

@@ -120,7 +120,7 @@ def doi_to_url(doi: str) -> str:
     return f"https://doi.org/{doi_match}"
 
 
-def get_cff_doi(data: bytes) -> Optional[List[str]]:
+def get_cff_doi(data: bytes) -> Optional[list[str]]:
     """Given a CFF file, returns a list of DOIs, if any.
 
     Parameters