build(deps): bump express and @oracle/ojet-cli

Bumps [express](https://github.com/expressjs/express) to 4.21.2 and updates ancestor dependency [@oracle/ojet-cli](http://www.oracle.com/jet). These dependencies need to be updated together.


Updates `express` from 4.17.3 to 4.21.2
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.2/History.md)
- [Commits](expressjs/express@4.17.3...4.21.2)

Updates `@oracle/ojet-cli` from 16.0.0 to 18.0.0

---
updated-dependencies:
- dependency-name: express
  dependency-type: indirect
- dependency-name: "@oracle/ojet-cli"
  dependency-type: direct:development
...

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

Author: dependabot[bot]