Bump cheroot from 8.6.0 to 9.0.0 (#1903)

* Bump cheroot from 8.6.0 to 9.0.0

Bumps [cheroot](https://github.com/cherrypy/cheroot) from 8.6.0 to 9.0.0.
- [Release notes](https://github.com/cherrypy/cheroot/releases)
- [Changelog](https://github.com/cherrypy/cheroot/blob/main/CHANGES.rst)
- [Commits](https://github.com/cherrypy/cheroot/compare/v8.6.0...v9.0.0)

---
updated-dependencies:
- dependency-name: cheroot
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update cheroot==9.0.0

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/cheroot/ssl/__init__.py

@@ -1,15 +1,9 @@
 """Implementation of the SSL adapter base interface."""
 
-from __future__ import absolute_import, division, print_function
-__metaclass__ = type
-
 from abc import ABCMeta, abstractmethod
 
-from six import add_metaclass
 
-
-@add_metaclass(ABCMeta)
-class Adapter:
+class Adapter(metaclass=ABCMeta):
     """Base class for SSL driver library adapters.
 
     Required methods:

lib/cheroot/ssl/builtin.py

@@ -7,12 +7,10 @@ To use this module, set ``HTTPServer.ssl_adapter`` to an instance of
 ``BuiltinSSLAdapter``.
 """
 
-from __future__ import absolute_import, division, print_function
-__metaclass__ = type
-
 import socket
 import sys
 import threading
+from contextlib import suppress
 
 try:
     import ssl
@@ -27,18 +25,13 @@ except ImportError:
     except ImportError:
         DEFAULT_BUFFER_SIZE = -1
 
-import six
-
 from . import Adapter
 from .. import errors
-from .._compat import IS_ABOVE_OPENSSL10, suppress
+from .._compat import IS_ABOVE_OPENSSL10
 from ..makefile import StreamReader, StreamWriter
 from ..server import HTTPServer
 
-if six.PY2:
-    generic_socket_error = socket.error
-else:
-    generic_socket_error = OSError
+generic_socket_error = OSError
 
 
 def _assert_ssl_exc_contains(exc, *msgs):

lib/cheroot/ssl/builtin.pyi

@@ -1,7 +1,6 @@
 from typing import Any
 from . import Adapter
 
-generic_socket_error: OSError
 DEFAULT_BUFFER_SIZE: int
 
 class BuiltinSSLAdapter(Adapter):
@@ -14,5 +13,5 @@ class BuiltinSSLAdapter(Adapter):
     def context(self, context) -> None: ...
     def bind(self, sock): ...
     def wrap(self, sock): ...
-    def get_environ(self): ...
+    def get_environ(self, sock): ...
     def makefile(self, sock, mode: str = ..., bufsize: int = ...): ...

lib/cheroot/ssl/pyopenssl.py

@@ -50,16 +50,11 @@ will be read, and the context will be automatically created from them.
    pyopenssl
 """
 
-from __future__ import absolute_import, division, print_function
-__metaclass__ = type
-
 import socket
 import sys
 import threading
 import time
 
-import six
-
 try:
     import OpenSSL.version
     from OpenSSL import SSL
@@ -229,8 +224,7 @@ class SSLConnectionProxyMeta:
         return type(name, bases, nmspc)
 
 
-@six.add_metaclass(SSLConnectionProxyMeta)
-class SSLConnection:
+class SSLConnection(metaclass=SSLConnectionProxyMeta):
     r"""A thread-safe wrapper for an ``SSL.Connection``.
 
     :param tuple args: the arguments to create the wrapped \

lib/cheroot/ssl/pyopenssl.pyi

@@ -1,9 +1,9 @@
 from . import Adapter
 from ..makefile import StreamReader, StreamWriter
 from OpenSSL import SSL
-from typing import Any
+from typing import Any, Type
 
-ssl_conn_type: SSL.Connection
+ssl_conn_type: Type[SSL.Connection]
 
 class SSLFileobjectMixin:
     ssl_timeout: int
@@ -13,13 +13,13 @@ class SSLFileobjectMixin:
     def sendall(self, *args, **kwargs): ...
     def send(self, *args, **kwargs): ...
 
-class SSLFileobjectStreamReader(SSLFileobjectMixin, StreamReader): ...  # type:ignore
-class SSLFileobjectStreamWriter(SSLFileobjectMixin, StreamWriter): ...  # type:ignore
+class SSLFileobjectStreamReader(SSLFileobjectMixin, StreamReader): ...  # type:ignore[misc]
+class SSLFileobjectStreamWriter(SSLFileobjectMixin, StreamWriter): ...  # type:ignore[misc]
 
 class SSLConnectionProxyMeta:
     def __new__(mcl, name, bases, nmspc): ...
 
-class SSLConnection():
+class SSLConnection:
     def __init__(self, *args) -> None: ...
 
 class pyOpenSSLAdapter(Adapter):
@@ -28,3 +28,4 @@ class pyOpenSSLAdapter(Adapter):
     def wrap(self, sock): ...
     def get_environ(self): ...
     def makefile(self, sock, mode: str = ..., bufsize: int = ...): ...
+    def get_context(self) -> SSL.Context: ...