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] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -15,7 +15,7 @@ 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: ${{ matrix.python-version }}
       - name: Install dependencies
@@ -112,7 +112,7 @@ jobs:
         with:
           target: "${{ matrix.os == 'windows-2022' && 'i686-pc-windows-msvc' || ( matrix.arch == 'arm64' && 'aarch64-apple-darwin' || 'x86_64-apple-darwin') }}"
       - name: Set up Python 3.13
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.13
       - name: Upgrade pip
@@ -143,7 +143,7 @@ jobs:
       - name: Download wheels
         uses: actions/download-artifact@v5
       - name: Set up Python 3.13
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.13
       - name: Upgrade pip