build(deps): bump redoc and @redocly/cli in /rest-gateway

Bumps [redoc](https://github.com/Redocly/redoc) to 2.4.0 and updates ancestor dependency [@redocly/cli](https://github.com/Redocly/redocly-cli). These dependencies need to be updated together.


Updates `redoc` from 2.1.4 to 2.4.0
- [Release notes](https://github.com/Redocly/redoc/releases)
- [Changelog](https://github.com/Redocly/redoc/blob/main/CHANGELOG.md)
- [Commits](Redocly/redoc@v2.1.4...v2.4.0)

Updates `@redocly/cli` from 1.14.0 to 1.34.1
- [Release notes](https://github.com/Redocly/redocly-cli/releases)
- [Changelog](https://github.com/Redocly/redocly-cli/blob/main/docs/changelog.md)
- [Commits](https://github.com/Redocly/redocly-cli/compare/@redocly/cli@1.14.0...@redocly/cli@1.34.1)

---
updated-dependencies:
- dependency-name: redoc
  dependency-type: indirect
- dependency-name: "@redocly/cli"
  dependency-type: direct:development
...

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

Author: dependabot[bot]