ci: Ensure CI is using latest NPM version

Author: rschristian

.github/workflows/ci.yml

@@ -19,6 +19,10 @@ jobs:
         with:
           node-version: 22
           cache: npm
+
+      - name: Update npm
+        run: npm install -g npm@latest
+
       - run: npm ci
       - name: test
         run: npm run test