Bump actions/setup-python from v1 to v2.2.1

Bumps [actions/setup-python](https://github.com/actions/setup-python) from v1 to v2.2.1.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v1...3105fb18c05ddd93efea5f9e0bef7a03a6e9e7df)

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

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Setup Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2.2.1
         with:
           python-version: 3.7
       - name: Install dependencies

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Setup Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2.2.1
         with:
           python-version: 3.7
       - name: Install dependencies