chore(deps): 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](actions/github-script@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>

Author: dependabot[bot]

.github/workflows/update-stores.yml

@@ -30,7 +30,7 @@ jobs:
           echo "KFUTIL_ARG=${{ github.event.client_payload.targetRepo }}" | tee -a $GITHUB_ENV
       - name: Check Open PRs for Existing Branch
         id: check-branch
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             // Look for open pull requests
@@ -184,7 +184,7 @@ jobs:
 
       - name: Create new PR for the newly created branch
         if: env.UPDATE_FILE == 'T' && env.PR_BRANCH == 'create'
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             console.log(`Created ${{env.KFUTIL_ARG}} `)