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/release.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Check out repository
       uses: actions/checkout@v5
     - name: Install Python 3.x
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: 3.x
     - name: Install build
@@ -44,7 +44,7 @@ jobs:
     - name: Check out repository
       uses: actions/checkout@v5
     - name: Install Python 3.x
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: 3.x
     - name: Set up QEMU

.github/workflows/tests.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Check out repository
       uses: actions/checkout@v5
     - name: Install Python 3.x
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: "3.x"
     - name: Install tox
@@ -37,7 +37,7 @@ jobs:
     - name: Check out repository
       uses: actions/checkout@v5
     - name: Install Python 3.x
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: "3.x"
     - name: Install tox
@@ -72,7 +72,7 @@ jobs:
     - name: Check out repository
       uses: actions/checkout@v5
     - name: Install Python ${{ matrix.python }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python }}
         allow-prereleases: true