♻️ refactor using matrix

.github/workflows/units-tests.yml

@@ -9,15 +9,19 @@ on:
 jobs:
   unit-tests:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [18.x]
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
+        with:
+          node-version: ${{ matrix.node-version }}
 
       - name: Set up Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 18
-          registry-url: https://registry.npmjs.org/
+          node-version: ${{ matrix.node-version }}
 
       - name: Install dependencies
         run: npm install