[fix] tracker url remover + external bangs: use standard network config

Using plain `httpx` directly doesn't use SearXNG's additional network config, including proxies, http2 config, ...

Related issues:
- https://github.com/searxng/searxng/issues/5027

searx/data/tracker_patterns.py

@@ -10,9 +10,8 @@ import re
 from collections.abc import Iterator
 from urllib.parse import urlparse, urlunparse, parse_qsl, urlencode
 
-import httpx
-
 from searx.data.core import get_cache, log
+from searx.network import get as http_get
 
 RuleType = tuple[str, list[str], list[str]]
 
@@ -44,7 +43,7 @@ class TrackerPatternsDB:
             self.cache.properties.set("tracker_patterns loaded", "OK")
             self.load()
         # F I X M E:
-        #     do we need a maintenance .. rember: database is stored
+        #     do we need a maintenance .. remember: database is stored
         #     in /tmp and will be rebuild during the reboot anyway
 
     def load(self):
@@ -71,7 +70,7 @@ class TrackerPatternsDB:
     def iter_clear_list(self) -> Iterator[RuleType]:
         resp = None
         for url in self.CLEAR_LIST_URL:
-            resp = httpx.get(url, timeout=3)
+            resp = http_get(url, timeout=3)
             if resp.status_code == 200:
                 break
             log.warning(f"TRACKER_PATTERNS: ClearURL ignore HTTP {resp.status_code} {url}")