Bump protobufjs-cli from 1.1.3 to 1.2.1 in /web/vtadmin

Bumps [protobufjs-cli](https://github.com/protobufjs/protobuf.js) from 1.1.3 to 1.2.1.
- [Release notes](https://github.com/protobufjs/protobuf.js/releases)
- [Changelog](https://github.com/protobufjs/protobuf.js/blob/master/CHANGELOG.md)
- [Commits](protobufjs/protobuf.js@protobufjs-cli-v1.1.3...protobufjs-cli-v1.2.1)

---
updated-dependencies:
- dependency-name: protobufjs-cli
  dependency-version: 1.2.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]