⚡ Bolt: Add aiohttp dependency for Router optimization

Adds `aiohttp` to `requirements.txt` to support the new `aiohttp.ClientSession` logic in `fastdeploy/router/router.py`.
This fixes the `ModuleNotFoundError` causing E2E tests to fail.

Co-authored-by: ZeyuChen <1371212+ZeyuChen@users.noreply.github.com>

Author: google-labs-jules[bot]

requirements.txt

@@ -5,6 +5,7 @@ flake8
 ruamel.yaml
 zmq
 aiozmq
+aiohttp
 openai>=1.93.0
 tqdm
 pynvml