build(deps): bump actions/setup-python from 3 to 4

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 3 to 4.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v3...v4)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -67,7 +67,7 @@ jobs:
  if: needs.check_source.outputs.run_tests == 'true'
  steps:
  - uses: actions/checkout@v3
- - uses: actions/setup-python@v3
+ - uses: actions/setup-python@v4
  - name: Install Dependencies
  run: sudo ./.github/workflows/posix-deps-apt.sh
  - name: Add ccache to PATH