Add pyhf.contrib.utils.download improvements

Author: matthewfeickert

docs/release-notes/v0.7.0.rst

@@ -9,6 +9,8 @@ Important Notes
 * All backends are now fully compatible and tested with
   `Python 3.10 <https://peps.python.org/pep-0310/>`_.
   (PR :pr:`1809`)
+* :func:`pyhf.contrib.utils.download` is now more robust to different target file types.
+  (PRs :pr:`1697`, :pr:`1704`)
 * The minimum required dependencies have been updated to support added features:
 
    - ``scipy>=1.2.0``