build(deps): bump multer and @nestjs/platform-express (#23143)

Bumps [multer](https://github.com/expressjs/multer) to 2.1.1 and updates ancestor dependency [@nestjs/platform-express](https://github.com/nestjs/nest/tree/HEAD/packages/platform-express). These dependencies need to be updated together.


Updates `multer` from 2.0.2 to 2.1.1
- [Release notes](https://github.com/expressjs/multer/releases)
- [Changelog](https://github.com/expressjs/multer/blob/main/CHANGELOG.md)
- [Commits](expressjs/multer@v2.0.2...v2.1.1)

Updates `@nestjs/platform-express` from 11.1.5 to 11.1.16
- [Release notes](https://github.com/nestjs/nest/releases)
- [Commits](https://github.com/nestjs/nest/commits/v11.1.16/packages/platform-express)

---
updated-dependencies:
- dependency-name: multer
  dependency-version: 2.1.1
  dependency-type: indirect
- dependency-name: "@nestjs/platform-express"
  dependency-version: 11.1.16
  dependency-type: direct:production
...

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Author: dependabot[bot]