Fix ClaudeSync 403 Error on Python 3.12.5 with Claude.ai

[jahwag]

This update allows ClaudeSync to run with the provider Claude.ai on Python 3.12.5 by switching the HTTP client from requests to urllib.

$ python --version && claudesync api login claude.ai
Python 3.12.5
To obtain your session key, please follow these steps:
1. Open your web browser and go to https://claude.ai
2. Log in to your Claude account if you haven't already
3. Once logged in, open your browser's developer tools:
   - Chrome/Edge: Press F12 or Ctrl+Shift+I (Cmd+Option+I on Mac)
   - Firefox: Press F12 or Ctrl+Shift+I (Cmd+Option+I on Mac)
   - Safari: Enable developer tools in Preferences > Advanced, then press Cmd+Option+I
4. In the developer tools, go to the 'Application' tab (Chrome/Edge) or 'Storage' tab (Firefox)
5. In the left sidebar, expand 'Cookies' and select 'https://claude.ai'
6. Locate the cookie named 'sessionKey' and copy its value. Ensure that the value is not URL-encoded.
Please enter your sessionKey: 
Please enter the expires time for the sessionKey (optional) [Wed, 18 Sep 2024 15:32:03 UTC]: 
Logged in successfully.
...
$ claudesync project sync
Local → Remote: 100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 46/46 [00:43<00:00,  1.05it/s] 
Project sync completed successfully.