devel/jujutsu: update to version 0.40.0
For the complete list of changes see:
https://github.com/jj-vcs/jj/releases/tag/v0.40.0
In addition to the version upgrade the following changes were applied
to this port, based on suggestions received from Theo Buehler, the
maintainer of the devel/jujutsu port on OpenBSD:
- Add a run dependency on git
- Point at the documetation of this release, not "latest"
- Change the defaault editor from nano to vi
- Install shell completion files for bash, fish, and zsh
- Install man-pages