sysutils/deskflow: Update 1.26.0 => 1.27.0
While here, remove devel/googletest and devel/doxygen dependencies.
This removes the HTML documentation.
Changelog:
https://github.com/deskflow/deskflow/releases/tag/v1.27.0
PR: 299047
Approved by: osa, vvd (Mentors, implicit)