ci: Separate step to install requirements before molecule 💚

.github/workflows/ci.yml

@@ -48,6 +48,9 @@ jobs:
       - name: Ensure requirements are installed
         run: pip install -r requirements.txt
      
+      - name: Ensure required collections/roles are installed
+        run: ansible-galaxy install -r molecule/requirements.yml
+
       - name: Run Molecule tests.
         run: molecule test
         env: