fix contributing.md and lint to use py314

Signed-off-by: emdneto <9735060+emdneto@users.noreply.github.com>

Author: emdneto

.github/workflows/generate_workflows_lib/src/generate_workflows_lib/lint.yml.j2

@@ -41,10 +41,10 @@ jobs:
       - name: Checkout repo @ SHA - ${% raw %}{{ github.sha }}{% endraw %}
         uses: actions/checkout@v4
 
-      - name: Set up Python 3.13
+      - name: Set up Python 3.14
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "3.14"
 
       - name: Install tox
         run: pip install tox-uv