Update CI to Node 20 and latest actions

Author: navitronic

.github/workflows/test.yml

@@ -8,11 +8,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v4
       with:
-        node-version: '10.x'
+        node-version: '20.x'
 
     - run: npm ci
     - run: npm run test