Log Message:
py-lexicon: updated to 3.15.0

3.15.0

Added

Add pyotp Python dependency in Lexicon to help implementing OTP (one-time \ 
password) on providers whose API supports this kind of authentication.
Add OTP support on hover provider, with a new flag named --auth-totp-secret.
Add type marker py.typed to inform types checkers about availability of type \ 
annotations in Lexicon codebase.

Modified

Fix and modernize ReadTheDoc documentation build.
Better error management and resource cleanup when Client is used as a context \ 
manager.

Removed

Stop using cryptography in providers where only hashing is needed.