updates windows binaries for full compatibility with Python 3.5+

the provided Windows libsndfile now uses Visual C++ 14.x, which is
fully compatible with Python 3.5+. Older versions of Python will not
be able to open file descriptors.

Author: bastibe

README.rst

@@ -301,6 +301,7 @@ News
 
     - Adds binary wheels for macOS M1
     - Improves compatibility with macOS, specifically for M1 machines
+    - Fixes file descriptor open for binary wheels on Windows and Python 3.5+
     - Updates libsndfile to v1.0.31
     - Adds get_strings method for retrieving all metadata at once
     - Improves documentation, error messages and tests