Bump actions/setup-node from 6 to 7

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 6 to 7.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v6...v7)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci
@@ -73,7 +73,7 @@ jobs:
       - uses: actions/download-artifact@v8
         with:
           name: build
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v7
         with:
           node-version: 20 # for npm@latest
           registry-url: 'https://registry.npmjs.org'