Log Message:
py-h11: updated to 0.13.0

v0.13.0 (2022-01-19)

Features
- Clarify that the Headers class is a Sequence and inherit from the
  collections Sequence abstract base class to also indicate this (and
  gain the mixin methods).
- Switch event classes to dataclasses for easier typing and slightly
  improved performance.
- Shorten traceback of protocol errors for easier readability
- Add typing including a PEP 561 marker for usage by type checkers
- Expand the allowed status codes to [0, 999] from [0, 600]

Backwards **in**\compatible changes
- Ensure request method is a valid token