Update Python setup in build workflow to use actions/setup-python@v4 …

…and improve dependency installation

.github/workflows/build.yml

@@ -35,12 +35,17 @@ jobs:
           curl -sSL https://raw.githubusercontent.com/HappyPathway/centralized-actions/main/gtag.py -o gtag.py
           curl -sSL https://raw.githubusercontent.com/HappyPathway/centralized-actions/main/gtag_requirements.txt -o requirements.txt
             
-      - name: Setup Python
-        uses: actions/setup-python@v2
+      - name: Setup minimal Python for gtag
+        uses: actions/setup-python@v4
         with:
           python-version: '3.11'
-          cache: pip
-
+          cache: 'pip'
+          cache-dependency-path: requirements.txt
+
+      - name: Install gtag dependencies
+        run: |
+          python -m pip install -r requirements.txt
+          
       - name: Setup Terraform
         uses: hashicorp/setup-terraform@v3.1.2
         with: