Bump actions/setup-python from 5 to 6 (#227)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/benchmark.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v5
         with:
           submodules: recursive
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.13"
       - name: Install deps

.github/workflows/linting.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.13"
       - name: Install deps

.github/workflows/pytest.yml

@@ -22,7 +22,7 @@ jobs:
         with:
           submodules: recursive
       - 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 module

.github/workflows/python-publish.yml

@@ -12,7 +12,7 @@ jobs:
       with:
         submodules: recursive
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: "3.x"
     - name: Install pypa/build

.github/workflows/requirements.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           submodules: recursive
       - name: Set up Python 3.13
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13"
       - name: Install package (no deps)