CI: Change node versions tested against.

We test against current + the currently maintained LTS versions.

Author: jgm

.github/workflows/ci.yml

@@ -10,12 +10,10 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-          - node: '17.x'
-          - node: '16.x'
-          - node: '15.x'
-          - node: '14.x'
-          - node: '13.x'
-          - node: '12.x'
+          - node: '25.x'
+          - node: '24.x'
+          - node: '22.x'
+          - node: '20.x'
     steps:
       - uses: actions/checkout@v1
       - name: Use Node.js