Bump pinned pywin32 to 301

Author: John Doe

setup.py

@@ -16,7 +16,7 @@
 
 extras_require = {
  # win32 APIs if on Windows (required for npipe support)
- ':sys_platform == "win32"': 'pywin32>=227',
+ ':sys_platform == "win32"': 'pywin32>=301',
 
  # If using docker-py over TLS, highly recommend this option is
  # pip-installed or pinned.