Bump actions/setup-python from 5 to 6

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>

Author: dependabot[bot]

.github/workflows/check.yml

@@ -34,7 +34,7 @@ jobs:
           - macos-13
     steps:
       - name: Setup python for tox
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - uses: actions/checkout@v4
@@ -43,7 +43,7 @@ jobs:
       - name: Install tox
         run: python -m pip install tox
       - name: Setup python for test ${{ matrix.py }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.py }}
       - name: Setup test suite
@@ -80,7 +80,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup Python 3.12
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - name: Install tox

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
       id-token: write
     steps:
       - name: Setup python to build package
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - name: Install build