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](actions/setup-python@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>

Author: dependabot[bot]

.github/workflows/main.yaml

@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2.4.0
       - name: Setup Python
-        uses: actions/setup-python@v2.3.0
+        uses: actions/setup-python@v2.3.1
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64
@@ -51,7 +51,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2.4.0
       - name: Setup Python
-        uses: actions/setup-python@v2.3.0
+        uses: actions/setup-python@v2.3.1
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64