Bump @percy/cli from 1.28.6 to 1.28.7

Bumps [@percy/cli](https://github.com/percy/cli/tree/HEAD/packages/cli) from 1.28.6 to 1.28.7.
- [Release notes](https://github.com/percy/cli/releases)
- [Commits](https://github.com/percy/cli/commits/v1.28.7/packages/cli)

---
updated-dependencies:
- dependency-name: "@percy/cli"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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