ci: get python version from pyproject.toml

Author: wesleyboar

.github/workflows/update-reqs.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.13'
+          python-version-file: 'pyproject.toml'
 
       - name: Install Poetry
         run: pip install poetry