ci: Use Node.js 22 for CI

Node.js 20 installed on Ubuntu 24.04 by default but it's segfaulting
when running our test suite for some reason. Let's try Node.js 22
instead.

Author: kateinoigakukun

.github/workflows/build.yml

@@ -152,6 +152,10 @@ jobs:
         with:
           ruby-version: "3.4.1"
           bundler-cache: false
+      - uses: actions/setup-node@v4
+        if: ${{ matrix.entry.test != '' }}
+        with:
+          node-version: 22
       - name: rake ${{ matrix.entry.test }}
         run: |
           bundle install --with=check --without=development