feat: add AIRBYTE_DISABLE_CACHE env var to completely disable HTTP response caching

Co-Authored-By: gl_anatolii.yatsuk <gl_anatolii.yatsuk@airbyte.io>

Author: devin-ai-integration[bot]

airbyte_cdk/sources/streams/http/http_client.py

@@ -127,7 +127,9 @@ def __init__(
         if session:
             self._session = session
         else:
-            self._use_cache = use_cache
+            # Allow disabling cache entirely via env var for debugging memory issues
+            disable_cache = os.getenv("AIRBYTE_DISABLE_CACHE", "").lower() in ("true", "1")
+            self._use_cache = use_cache and not disable_cache
             self._session = self._request_session()
             self._session.mount(
                 "https://",