Refactor: Use npm install in workflow

.github/workflows/playwright.yml

@@ -16,6 +16,7 @@ jobs:
   preflight:
     name: Validate Environment
     runs-on: ubuntu-latest
+    environment: production
     steps:
       - name: Check Required Secrets
         run: |
@@ -73,6 +74,7 @@ jobs:
     needs: preflight
     timeout-minutes: 60
     runs-on: ubuntu-latest
+    environment: production
     
     strategy:
       fail-fast: false
@@ -84,11 +86,11 @@ jobs:
       
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'npm'
       
       - name: Install dependencies
-        run: npm ci
+        run: npm install
       
       - name: Install Playwright Browsers
         run: npx playwright install --with-deps ${{ matrix.browser }}