Verify PR checks in a different job, with newer Node

.github/workflows/pr-checks.yml

@@ -52,19 +52,10 @@ jobs:
       - name: Verify compiled JS up to date
         run: .github/workflows/script/check-js.sh
 
-      - name: Verify PR checks up to date
-        if: always()
-        run: .github/workflows/script/verify-pr-checks.sh
-
       - name: Run unit tests
         if: always()
         run: npm test
 
-      - name: Run pr-checks tests
-        if: always()
-        working-directory: pr-checks
-        run: npm ci && npx tsx --test
-
       - name: Lint
         if: always() && matrix.os != 'windows-latest'
         run: npm run lint-ci
@@ -76,6 +67,40 @@ jobs:
           sarif_file: eslint.sarif
           category: eslint
 
+  # Verifying the PR checks are up-to-date requires Node 24. The PR checks are not dependent
+  # on the main codebase and therefore do not need to be run as part of the same matrix that
+  # we use for the `unit-tests` job.
+  verify-pr-checks:
+    name: Verify PR checks
+    if: github.triggering_actor != 'dependabot[bot]'
+    permissions:
+      contents: read
+    runs-on: ubuntu-slim
+    timeout-minutes: 10
+
+    steps:
+      - name: Prepare git (Windows)
+        if: runner.os == 'Windows'
+        run: git config --global core.autocrlf false
+
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24
+          cache: 'npm'
+
+      - name: Verify PR checks up to date
+        if: always()
+        run: .github/workflows/script/verify-pr-checks.sh
+
+      - name: Run pr-checks tests
+        if: always()
+        working-directory: pr-checks
+        run: npm ci && npx tsx --test
+
   check-node-version:
     if: github.triggering_actor != 'dependabot[bot]'
     name: Check Action Node versions