Update verion of lab.nexed.com/kirr/neo.git used and all of its dependencies.

NEO/go now uses 2 Cgo packages:

- github.com/gwenn/gosqlite, and
- github.com/DataDog/czlib

and github.com/soheilhy/cmux to multiplex NEO & HTTP traffic on the same port.

Otherwise it is straighforward update which transitively pulled some more
dependencies.