fix Python deprecations

[spaceone]

=============================== warnings summary ===============================
circuits/web/processors.py:2
  /home/runner/work/circuits/circuits/circuits/web/processors.py:2: DeprecationWarning: 'cgi' is deprecated and slated for removal in Python 3.13
    from cgi import parse_header
tests/web/test_servers.py:23
  /home/runner/work/circuits/circuits/tests/web/test_servers.py:23: DeprecationWarning: ssl.PROTOCOL_TLS is deprecated
    SSL_CONTEXT = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
tests/core/test_bridge.py::test
tests/node/test_node.py::test_return_value
  /opt/hostedtoolcache/Python/3.12.2/x64/lib/python3.12/multiprocessing/popen_fork.py:66: DeprecationWarning: This process (pid=2001) is multi-threaded, use of fork() may lead to deadlocks in the child.
    self.pid = os.fork()
tests/web/test_expires.py::test
  /home/runner/work/circuits/circuits/tests/web/test_expires.py:26: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    diff = mktime(parsedate(expires)) - mktime(datetime.utcnow().timetuple())
tests/web/test_expires.py::test_nocache
  /home/runner/work/circuits/circuits/tests/web/test_expires.py:39: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    now = datetime.utcnow()
tests/web/test_jsonrpc.py::test
  /home/runner/work/circuits/circuits/tests/web/jsonrpclib.py:370: DeprecationWarning: urllib.parse.splittype() is deprecated as of 3.8, use urllib.parse.urlparse() instead
    utype, uri = splittype(uri)
tests/web/test_jsonrpc.py::test
  /home/runner/work/circuits/circuits/tests/web/jsonrpclib.py:373: DeprecationWarning: urllib.parse.splithost() is deprecated as of 3.8, use urllib.parse.urlparse() instead
    self.__host, self.__handler = splithost(uri)
tests/web/test_jsonrpc.py::test
  /home/runner/work/circuits/circuits/tests/web/jsonrpclib.py:236: DeprecationWarning: urllib.parse.splituser() is deprecated as of 3.8, use urllib.parse.urlparse() instead
    auth, host = splituser(host)

[jhulten]

You planning on working through them all or do you want some help.

[spaceone]

I appreciate any support :-)

[jhulten]

I will take a swing at the jsonrpc ones. Just so we don't double up on work.