ci: update the workflow

Author: vansergen

.github/workflows/ci.yml

@@ -6,14 +6,18 @@ jobs:
   test:
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        node-version: [20, 21]
+
     steps:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: ${{ matrix.node-version }}
           check-latest: true
 
       - name: Install dependencies
@@ -40,7 +44,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           check-latest: true
 
       - name: Import GPG key