Migrate changetool to pr-checks

.github/workflows/pr-checks.yml

@@ -77,33 +77,6 @@ jobs:
           sarif_file: eslint.sarif
           category: eslint
 
-  changetool-tests:
-    name: changetool unit tests
-    permissions:
-      contents: read
-    runs-on: ubuntu-slim
-    timeout-minutes: 10
-
-    concurrency:
-      cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-      group: pr-checks-changetool-tests-${{ github.ref }}-${{ github.event_name }}
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-
-      - name: Set up Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
-        with:
-          node-version: 24
-          cache: 'npm'
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Run changetool unit tests
-        run: npm --workspace changetool test
-
   # These checks do not need to be run as part of the same matrix that we use for the `unit-tests`
   # job.
   other-checks: