chore: Fix remaining telemetry warning log to debug

Changes remaining logger.warning in telemetry_push_client.py to debug level
for consistency with other telemetry logging.

Author: samikshya-db

src/databricks/sql/telemetry/telemetry_push_client.py

@@ -120,7 +120,7 @@ def _make_request_and_check_status(
 
             # Check for rate limiting or service unavailable
             if response.status in [429, 503]:
-                logger.warning(
+                logger.debug(
                     "Telemetry endpoint returned %d for host %s, triggering circuit breaker",
                     response.status,
                     self._host,