fix: Support Python3.8

src/doc_search/workflow/__init__.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 import os
 import pickle

tests/convert_images_to_text_test.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from pathlib import Path
 from typing import Any
 

tests/convert_pdf_to_pages_test.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from pathlib import Path
 from typing import Any
 

tests/verify_input_file_test.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from pathlib import Path
 from typing import Any