make pydantic a conditional import

Author: kazmer97

lib/idp_common_pkg/idp_common/extraction/service.py

@@ -14,13 +14,13 @@
 import time
 from typing import Any, Dict, List, Optional, Type
 
-from pydantic import BaseModel, Field, create_model
-
 from idp_common import bedrock, image, metrics, s3, utils
 from idp_common.models import Document
 
 # Conditional import for agentic extraction (requires Python 3.10+ dependencies)
 try:
+    from pydantic import BaseModel, Field, create_model
+
     from idp_common.extraction.agentic_idp import structured_output
 
     AGENTIC_AVAILABLE = True