build(deps): bump firebase/php-jwt from 6.8.0 to 6.9.0

Bumps [firebase/php-jwt](https://github.com/firebase/php-jwt) from 6.8.0 to 6.9.0.
- [Release notes](https://github.com/firebase/php-jwt/releases)
- [Changelog](https://github.com/firebase/php-jwt/blob/main/CHANGELOG.md)
- [Commits](firebase/php-jwt@v6.8.0...v6.9.0)

---
updated-dependencies:
- dependency-name: firebase/php-jwt
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>