docs: accept type hint suggestions

Co-authored-by: Wei Lee <weilee.rx@gmail.com>

Author: LuisHenri

tests/utils.py

@@ -55,7 +55,7 @@ def get_current_branch() -> str:
     return c.out
 
 
-def create_tag(tag: str, message: str | None = None):
+def create_tag(tag: str, message: str | None = None) -> None:
     c = git.tag(tag, annotated=(message is not None), msg=message)
     if c.return_code != 0:
         raise exceptions.CommitError(c.err)