sysutils/nerdctl: Update to v2.2.2
Changelog: https://github.com/containerd/nerdctl/releases/tag/v2.2.2
Use GH for full source
Fix test target
Update maintainer email address
Reviewed by: thierry (mentor)
Approved by: thierry (mentor)
Differential Revision: https://reviews.freebsd.org/D56275