build(deps): bump actions/setup-node from 4 to 6

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v4...v6)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/close-inactive-issues.yml

@@ -11,7 +11,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@v10
+      - uses: actions/stale@v9
         with:
           days-before-issue-stale: 200
           days-before-issue-close: 5

.github/workflows/workflow.yml

@@ -25,7 +25,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v5
     - name: Setup Node.js 24.x
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: 24.x
         cache: npm