Update actions/setup-python requirement to v2.1.4 (#642)

Updates the requirements on [actions/setup-python](https://github.com/actions/setup-python) to permit the latest version.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/commits/41b7212b1668f5de9d65e9c82aa777e6bbedb3a8)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Setup python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2.1.4
         with:
           python-version: ${{ matrix.PYTHON.VERSION }}
       - name: Install tox and coverage
@@ -55,7 +55,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Setup python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2.1.4
         with:
           python-version: ${{ matrix.PYTHON.VERSION }}
           architecture: ${{ matrix.WINDOWS.ARCH }}

.github/workflows/wheel-builder.yml

@@ -98,7 +98,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Setup python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v2.1.4
         with:
           python-version: ${{ matrix.PYTHON.VERSION }}
           architecture: ${{ matrix.WINDOWS.ARCH }}