CI: update Node.js version

Author: azu

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [12, 14]
+        node-version: [ 20, 22, 24 ]
     steps:
       - name: checkout
         uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0