build(deps): 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/python.yml

@@ -21,7 +21,7 @@ jobs:
         - 3.8
     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 }}
     - run: pip install --upgrade pipenv==2020.8.13
@@ -48,7 +48,7 @@ jobs:
       fail-fast: false
     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 }}
     - run: pip install --upgrade pipenv==2020.8.13