Assign tooling developers for .gitpod.yml file

What does this MR do and why?

This PR assigns tooling developers as reviewers when MR introduces a change in https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitpod.yml file. Closes #365534 (closed).

Screenshots or screen recordings

Verified that Danger suggested reviewers and maintainers by committing a test change in .gitpod.yml.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #365534 (closed)