Bump setup-python action to v4

Signed-off-by: Alex Nelson <[email protected]>

Author: ajnelson-nist

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
     - name: Start from clean state