feat(15-matrices): add fail-fast and include

.github/workflows/15-matrices.yaml

@@ -8,15 +8,29 @@ jobs:
     name: ${{ matrix.os }}-${{ matrix.node-version }}
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         node-version: [18.x, 20.x, 21.x]
         os:
           - ubuntu-latest
           - windows-latest
+        include:
+          - os: ubuntu-latest
+            node-version: 16.x
+          - os: ubuntu-latest
+            node-version: 21.x
+            tag: experimental
     steps:
       - name: Setup node
         uses: actions/setup-node@v3
         with: 
           node-version: ${{ matrix.node-version }}
+      - name: Fail if experimental
+        if: matrix.tag == 'experimental'
+        run: exit 1
       - name: Perform some tests
-        run: echo "Running tests on OS ${{ matrix.os }} and NodeJS ${{ matrix.node-version }}"
+        run: |
+          echo "Running tests on OS ${{ matrix.os }} and NodeJS ${{ matrix.node-version }}"
+          sleep 10
+      - name: Upload test results
+        run: echo "Uploading test results"