chore(deps): bump @theia/messages from 1.54.0 to 1.55.0

Bumps [@theia/messages](https://github.com/eclipse-theia/theia) from 1.54.0 to 1.55.0.
- [Release notes](https://github.com/eclipse-theia/theia/releases)
- [Changelog](https://github.com/eclipse-theia/theia/blob/master/CHANGELOG.md)
- [Commits](eclipse-theia/theia@v1.54.0...v1.55.0)

---
updated-dependencies:
- dependency-name: "@theia/messages"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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