Python: update annotations

This because `resolve` accesses the file system,
I am open to not include that fact in the modelling.

Author: yoff

python/ql/test/library-tests/frameworks/django-v2-v3/testproj/settings.py

@@ -13,7 +13,7 @@
 from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
-BASE_DIR = Path(__file__).resolve().parent.parent
+BASE_DIR = Path(__file__).resolve().parent.parent  #$ getAPathArgument=Path()
 
 
 # Quick-start development settings - unsuitable for production