Log Message:
py-cheroot: updated to 6.5.4

v6.5.4
Fix cheroot.ssl.pyopenssl under Python 3.
Remove custom license field from dist metadata.
Fully integrate trustme into all TLS tests. Also remove all hardcoded TLS \ 
certificates.
Remove traces of unittest and ddt usage.
Fix invalid input processing in cheroot._compat.extract_bytes().
Fix returning error explanation over plain HTTP for PyOpenSSL.
Add a fallback for os.lchmod() where it’s missing.
Avoid traceback for invalid client cert with builtin ssl adapter.
Avoid deprecation warning with OpenSSL.SSL.Connection.
Fix socket wrapper in PyOpenSSL adapter.
Improve tests coverage:
Client TLS certificate tests
cheroot._compat.extract_bytes()
Peercreds lookup

v6.5.3
Make SCRIPT_NAME optional per PEP 333.