Update actions/setup-python action to v6

.github/workflows/lint.yaml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install uv

.github/workflows/release.yaml

@@ -13,7 +13,7 @@ jobs:
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v6