build(deps): Bump @percy/agent from 0.26.0 to 0.26.8
build(deps): Bump @percy/agent from 0.26.0 to 0.26.8

Bumps [@percy/agent](https://github.com/percy/percy-agent) from 0.26.0 to 0.26.8.
- [Release notes](https://github.com/percy/percy-agent/releases)
- [Changelog](https://github.com/percy/percy-agent/blob/master/CHANGELOG.md)
- [Commits](https://github.com/percy/percy-agent/compare/v0.26.0...v0.26.8)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
percy/percy-webdriverio,percy/percy-webdriverio