chore(deps): update actions/github-script action to v9

Author: renovate-bot

.github/workflows/mirror-changelog.yml

@@ -25,7 +25,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Add Toolbox Release Notes to PR Body
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9
         with:
           script: |
             const prBody = context.payload.pull_request.body || '';