build(deps): bump actions/setup-python from 2 to 4 (#27)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/readme.yml

@@ -11,7 +11,7 @@ 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'