* RFD 0029 : Move GitHub review bot to shared-workflows repository
Apart from relocating the code to a different location and renaming the package, this
is a no-op change
Depends-on: gravitational/shared-workflows#12
* remove mentions of the GitHub review bot from Makefile targets
In a3d85ab removed reviewers from jobs that don't require it and did not
update parsing logic. Instead pass reviewers to all jobs as it is not a
secret and will be inlined into actions/bot soon.
rosstimothy