Add the dependency install step

Author: leeyi45

.github/workflows/new-workflow.yml

@@ -29,6 +29,9 @@ jobs:
           node-version-file: .node-version
           cache: yarn
 
+      - name: Install dependencies
+        run: yarn install --immutable
+
       - name: Find Packages
         id: find
         uses: ./.github/actions/info