install python dep

Signed-off-by: Peter St. John <pstjohn@nvidia.com>

Author: pstjohn

.github/workflows/unit-tests-recipes.yml

@@ -110,9 +110,20 @@ jobs:
     steps:
       - name: Setup proxy cache
         uses: nv-gha-runners/setup-proxy-cache@main
+
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Setup python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install ci script dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install platformdirs
+
       - name: Run tests
         env:
           DIRS_JSON: ${{ needs.changed-dirs.outputs.dirs }}