use node 22 for workflows

Author: nathancahill

.github/workflows/ci.yaml

@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-node@v6
         with:
-          node-version: 20 # EOL: Apr 30, 2026
+          node-version: 22 # (Active LTS + previous LTS)
       - run: npm ci
       - run: npm run format
       - run: npm run lint