Update src/pdf_ocr_pipeline/settings.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: domfahey

src/pdf_ocr_pipeline/settings.py

@@ -19,7 +19,7 @@
     # Attempt import; catch any error (including PydanticImportError) and shim.
     try:
         from pydantic import BaseSettings  # type: ignore
-    except Exception:  # pragma: no cover
+    except ImportError:  # pragma: no cover
         from pydantic import BaseModel
 
         class BaseSettings(BaseModel):  # type: ignore