Update walk.py to support Poetry

Poetry does not store it's dependencies in requirements.txt

src/verinfast/dependencies/walk.py

@@ -60,7 +60,7 @@ def walk(logger, path: str = "./", output_file="./dependencies.json"):
     )
 
     py_walker = PyWalker(
-        manifest_files=["requirements.txt", "requirements-dev.txt"],
+        manifest_files=["requirements.txt", "requirements-dev.txt", "pyproject.toml", "poetry.lock"],
         manifest_type="txt",
         logger=logger,
         root_dir=path