Bump mocha from 11.5.0 to 11.6.0

Bumps [mocha](https://github.com/mochajs/mocha) from 11.5.0 to 11.6.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/main/CHANGELOG.md)
- [Commits](mochajs/mocha@v11.5.0...v11.6.0)

---
updated-dependencies:
- dependency-name: mocha
  dependency-version: 11.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]