github-actions: bump github/codeql-action from 2.1.8 to 2.1.9

github-actions: bump github/codeql-action from 2.1.8 to 2.1.9

Bumps [github/codeql-action](https://github.com/github/codeql-action) from 2.1.8 to 2.1.9.
- [Release notes](https://github.com/github/codeql-action/releases)
- [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/github/codeql-action/compare/1ed1437484560351c5be56cf73a48a279d116b78...7502d6e991ca767d2db617bfd823a1ed925a0d59)

---
updated-dependencies:
- dependency-name: github/codeql-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>