Bump actions/github-script from 6 to 7 in /.github/workflows (#909)

Bumps [actions/github-script](https://github.com/actions/github-script) from 6 to 7.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v6...v7)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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