build(deps): bump actions/setup-python from v1 to v2.0.1

Bumps [actions/setup-python](https://github.com/actions/setup-python) from v1 to v2.0.1.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v1...807b74f)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/pythonapp.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-ver }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v2.0.1
       with:
         python-version: ${{ matrix.python-ver }}
     - uses: actions/cache@v2