Fix Black formatting violations

Apply Black formatting to files modified in previous commits:
- src/databricks/sql/common/unified_http_client.py
- src/databricks/sql/telemetry/telemetry_client.py

Changes are purely cosmetic (quote style consistency).

Signed-off-by: Madhavendra Rathore <madhavendra.rathore@databricks.com>

Author: msrathore-db

src/databricks/sql/common/unified_http_client.py

@@ -294,7 +294,9 @@ def request_context(
         # DEFENSIVE: Check if pool_manager is None (client closing/closed)
         # This prevents AttributeError race condition when telemetry cleanup happens
         if pool_manager is None:
-            logger.debug("HTTP client closing or closed, cannot make request to %s", url)
+            logger.debug(
+                "HTTP client closing or closed, cannot make request to %s", url
+            )
             raise RequestError("HTTP client is closing or has been closed")
 
         response = None

src/databricks/sql/telemetry/telemetry_client.py

@@ -445,7 +445,7 @@ def __del__(self):
         close the http client.
         """
         try:
-            if hasattr(self, '_http_client') and self._http_client:
+            if hasattr(self, "_http_client") and self._http_client:
                 self._http_client.close()
         except Exception:
             pass