Power Platform Build Tools automate common build and deployment tasks related to Power Platform. This includes synchronization of solution metadata (a.k.a. solutions) between development environments and source control, generating build artifacts, deploying to downstream environments, provisioning/de-provisioning of environments, and the ability to perform static analysis checks against your solution using the PowerApps checker service.
Dependabot fired alerts for these, but is apparently unable to make PRs for them as it does for the TS/JS updates.