fix python tests

Author: gtfierro

.github/workflows/ci.yml

@@ -42,6 +42,6 @@ jobs:
         run: uv run maturin build --release --features abi3
         working-directory: ./python
       - name: Test python package
-        run: uv run python -m unittest test.py
+        run: uv run python -m unittest discover -s tests
         working-directory: ./python