Bump actions/setup-python from v2 to v2.1.1

Bumps [actions/setup-python](https://github.com/actions/setup-python) from v2 to v2.1.1.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v2...0c28554)

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

Author: dependabot[bot]

.github/workflows/main.yml

@@ -49,7 +49,7 @@ jobs:
       run: |
         brew install llvm
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v2.1.1
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install python dependencies

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
       with:
         submodules: 'recursive'
     - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v2.1.1
       with:
         python-version: 3.8
     - name: Install python dependencies