Log Message:
py-spake2: updated to 0.9

Release 0.9 (24-Sep-2024)

This release mainly deals with packaging simplifications: two dependencies \ 
("six" and "hkdf") are removed.
The "cryptography" library takes the place of "hkdf" for key \ 
derivation.

There is no longer a vendored version of "six" (nor internal use of \ 
it, thanks a-dieste).

The "versioneer" library is updated to 0.29.