Bump actions/setup-python from 2.3.0 to 2.3.1

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v2.3.0...v2.3.1)

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

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

.github/workflows/ci-workflow.yml

@@ -17,7 +17,7 @@ jobs:
     - uses: actions/checkout@v2.4.0
 
     - name: Set up Python
-      uses: actions/setup-python@v2.3.0
+      uses: actions/setup-python@v2.3.1
       with:
         python-version: 3.8
 
@@ -57,7 +57,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2.4.0
 
-    - uses: actions/setup-python@v2.3.0
+    - uses: actions/setup-python@v2.3.1
       with:
         python-version: ${{ matrix.python-version }}