Bump actions/setup-python from 5 to 6 (#1440)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 5 to 6.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Setup python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.PYTHON.VERSION }}
       - run: python -m pip install nox
@@ -95,7 +95,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Setup python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.PYTHON }}
       - run: ./.github/downstream.d/${{ matrix.DOWNSTREAM }}.sh install
@@ -118,7 +118,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Setup python
-        uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: '3.12'
         timeout-minutes: 3

.github/workflows/release.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Set up Python
-        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3 # v5.2.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
 
       - name: Install build dependencies
         run: python -m pip install uv