Bump actions/setup-python from 2 to 4 (#48)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2 to 4. - [Release notes](https://github.com/actions/setup-python/releases) - [Commits](actions/setup-python@v2...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> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/readme.yml

@@ -13,7 +13,7 @@ jobs:
  uses: actions/checkout@master
 
  - name: 'Set up Python 3.7'
- uses: actions/setup-python@v2
+ uses: actions/setup-python@v4
  with:
  python-version: '3.x'