build(deps): update pdfminer.six to latest version

- Change pdfminer.six dependency from ==20231228 to >=20250416
- This update ensures compatibility with the latest version of pdfminer.six

requirements.txt

@@ -10,6 +10,6 @@ scikit-learn>=1.0.2
 torch>=2.2.2,!=2.5.0,!=2.5.1
 torchvision
 transformers>=4.49.0,!=4.51.0,<5.0.0
-pdfminer.six==20231228
+pdfminer.six>=20250416
 tqdm>=4.67.1
 # The requirements.txt must ensure that only necessary external dependencies are introduced. If there are new dependencies to add, please contact the project administrator.