Update unit.yml

Author: amontanez24

.github/workflows/unit.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies