build(deps): 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-linux.yml

@@ -35,7 +35,7 @@ jobs:
       - uses: actions/checkout@v5
         with:
           submodules: recursive
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: python -m pip install -U pip
@@ -71,7 +71,7 @@ jobs:
           - os: "ubuntu-24.04-arm"
             python-version: "3.8"
     steps:
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - uses: actions/download-artifact@v5
@@ -116,7 +116,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - uses: actions/download-artifact@v5

.github/workflows/release-osx-win.yml

@@ -96,7 +96,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - uses: actions/download-artifact@v5