Update to node 22

Author: sethfowler-datadog

.github/workflows/publish.yaml

@@ -15,7 +15,7 @@ jobs:
       - name: Setup NodeJS
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
           cache: npm
       - run: npm install --force
       - name: Build app with GitHub Pages base