Add testing dependencies: pytest, pytest-asyncio, and pytest-socket

app/requirements.txt

@@ -147,6 +147,9 @@ pypdf==5.4.0
 pypdfium2==4.30.1
 PyPika==0.48.9
 pyproject_hooks==1.2.0
+pytest==8.3.5
+pytest-asyncio==0.26.0
+pytest-socket==0.7.0
 python-dateutil==2.9.0.post0
 python-dotenv==1.0.1
 python-iso639==2025.2.18