👷 Add matrix to test run

Author: Pavel Švagr

.github/workflows/test.yml

@@ -5,13 +5,16 @@ name: Test
 on: [push]
 
 jobs:
+  strategy:
+    matrix:
+      version: [ 18, 20, 22 ]
   run-eslint-and-prettier:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: ${{ matrix.version }}
           registry-url: https://registry.npmjs.org/
       - run: npm install
       - run: npm run build