fix: logger usage

Signed-off-by: Mustafa Elbehery <melbeher@redhat.com>

llama_stack/providers/utils/kvstore/postgres/postgres.py

@@ -4,16 +4,17 @@
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
 
-import logging
 from datetime import datetime
 
 import psycopg2
 from psycopg2.extras import DictCursor
 
+from llama_stack.log import get_logger
+
 from ..api import KVStore
 from ..config import PostgresKVStoreConfig
 
-log = logging.getLogger(__name__)
+log = get_logger(name=__name__, category="core")
 
 
 class PostgresKVStoreImpl(KVStore):