add matrix to dependabot-ci workflow (#16)

.github/workflows/dependabot-ci.yml

@@ -1,15 +1,32 @@
 name: dependabot-ci
 on: pull_request
 
+# Cancel in progress workflows
+# in the scenario where we already had a run going for that PR/branch/tag but then triggered a new run
+concurrency:
+  group: '${{ github.workflow }} ✨ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   dependabot-tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [18, 20, 22]
+
+    name: Node.js ${{matrix.node-version}}
+
     runs-on: ubuntu-latest
     if: github.event.pull_request.user.login == 'dependabot[bot]'
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: ${{matrix.node-version}}
+      - name: Output Node and NPM versions
+        run: |
+          echo "Node.js version: $(node -v)"
+          echo "NPM version: $(npm -v)"
       - run: npm ci
       - run: npm run build --workspaces --if-present
       - run: npm test --if-present # run the monorepo root tests