Bump actions/setup-python from 4 to 6 (#127)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4 to 6.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v4...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/build_wheel.yml

@@ -31,7 +31,7 @@ jobs:
       uses: actions/checkout@v5
 
     - name: Install Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.PYTHON_VERSION }}
 
@@ -111,7 +111,7 @@ jobs:
       uses: actions/checkout@v5
 
     - name: Install Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.PYTHON_VERSION }}
 
@@ -200,7 +200,7 @@ jobs:
         path: ./wheelhouse
 
     - name: Install Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.PYTHON_VERSION }}
 
@@ -237,7 +237,7 @@ jobs:
         path: ./wheelhouse
 
     - name: Install Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v6
       with:
         python-version: 3.13