build(deps): bump actions/github-script from 7 to 8 (#313)

Bumps [actions/github-script](https://github.com/actions/github-script) from 7 to 8.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](https://github.com/actions/github-script/compare/v7...v8)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/auto-response.yml

@@ -20,7 +20,7 @@ jobs:
       issues: write
     steps:
       - name: Apply contributor tier label for issue author
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             const owner = context.repo.owner;
@@ -156,7 +156,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Handle label-driven responses
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             const label = context.payload.label?.name;

.github/workflows/labeler.yml

@@ -20,7 +20,7 @@ jobs:
           sync-labels: true
 
       - name: Apply size/risk/module labels
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             const pr = context.payload.pull_request;

.github/workflows/pr-hygiene.yml

@@ -22,7 +22,7 @@ jobs:
       STALE_HOURS: "48"
     steps:
       - name: Nudge PRs that need rebase or CI refresh
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             const staleHours = Number(process.env.STALE_HOURS || "48");