ci: run repo sentinel gate on Python 3.14

Author: stacknil

.github/workflows/repo-sentinel.yml

@@ -17,9 +17,14 @@ jobs:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
 
+      - name: Set up Python
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1  # v6.3.0
+        with:
+          python-version: "3.14"
+
       - name: Install repo-sentinel-lite
         run: |
-          python3 -m venv "$RUNNER_TEMP/repo-sentinel-venv"
+          python -m venv "$RUNNER_TEMP/repo-sentinel-venv"
           "$RUNNER_TEMP/repo-sentinel-venv/bin/python" -m pip install --upgrade pip
           "$RUNNER_TEMP/repo-sentinel-venv/bin/python" -m pip install repo-sentinel-lite