Fix: Refactor SSL socket wrapping in ValidatedHTTPSConnection

[ethanke]

File c:\Users\Ethan\Hobby\Rustle.venv\Lib\site-packages\hetzner\robot.py:391, in ServerManager.iter(self)
390 def iter(self):
--> 391 return iter([Server(self.conn, s) for s in self.conn.get('/server')])

File c:\Users\Ethan\Hobby\Rustle.venv\Lib\site-packages\hetzner\robot.py:368, in RobotConnection.get(self, path)
367 def get(self, path):
--> 368 return self.request('GET', path)

File c:\Users\Ethan\Hobby\Rustle.venv\Lib\site-packages\hetzner\robot.py:329, in RobotConnection.request(self, method, path, data, allow_empty)
325 headers['Content-Type'] = 'application/x-www-form-urlencoded'
327 self.logger.debug("Sending %s request to Robot at %s with data %r.",
328 method, path, data)
--> 329 response = self._request(method, path, data, headers)
330 raw_data = response.read().decode('utf-8')
331 if len(raw_data) == 0 and not allow_empty:

File c:\Users\Ethan\Hobby\Rustle.venv\Lib\site-packages\hetzner\robot.py:301, in RobotConnection._request(self, method, path, data, headers, retry)
300 def _request(self, method, path, data, headers, retry=1):
...
68 ca_certs=cafile)
69 if bundle is None:
70 ca_certs.close()

AttributeError: module 'ssl' has no attribute 'wrap_socket'

Updated the SSL socket wrapping mechanism to use ssl.create_default_context() for improved security and maintainability. The previous method of wrapping the socket has been replaced with a context that loads verification locations if a CA file is provided.