Bump actions/github-script from 7 to 8

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>

.github/workflows/helper.yml

@@ -19,7 +19,7 @@ jobs:
           
       - name: Check if PR was merged
         id: pr-merge-check
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             return context.payload.pull_request.merged
@@ -33,7 +33,7 @@ jobs:
       # Post the content of merged.md as a comment using the custom token
       - name: Post comment on PR
         if: steps.pr-merge-check.outputs.result == 'true'
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           github-token: ${{ steps.create_token.outputs.token }}
           script: |