kept Fabric's dependency as is;
  - upstream's code makes proper use of its included libraries;
Fabric39 only hits python3.9+ compatibilities;
  - plus: ports for this particular application does not exist yet.

* https://github.com/Parsely/streamparse/search?q=fabric
* https://github.com/Parsely/streamparse/compare/v4.0.0...v4.1.2