add type hints for serach ontology

tools/fetch_ontology_tools.py

@@ -22,7 +22,7 @@ def load_edam_ontology():
         return None
 
 @tool
-def search_edam_ontology_by_search_term(search_term: str = None) -> list:
+def search_edam_ontology_by_search_term(search_term: str = None) -> list[str]:
     """
     Generic function to search by EDAM entity type using native search. The native search is strict so you need to provide single word search terms (for example: 'fasta').