chore: remove hard-pin of pycares

Author: xmatthias

requirements.txt

@@ -8,8 +8,6 @@ ta-lib==0.6.8
 technical==1.5.3
 
 ccxt==4.5.26
-# TODO: remove pycares pin must wait until aiodns releases a new version: # https://github.com/aio-libs/aiodns/issues/214
-pycares==4.11.0
 cryptography==46.0.3
 aiohttp==3.13.2
 SQLAlchemy==2.0.44