chore: use ubuntu 24.04 for online tests

Author: xmatthias

.github/workflows/ci.yml

@@ -434,7 +434,7 @@ jobs:
 
   build-linux-online:
     # Run pytest with "live" checks
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
       with:

tests/exchange_online/conftest.py

@@ -410,7 +410,6 @@
     },
     "htx": {
         "pair": "ETH/BTC",
-        "use_ci_proxy": True,
         "stake_currency": "BTC",
         "hasQuoteVolume": True,
         "timeframe": "1h",