Propose minor change to `py38-dev` requirements.txt to not install incompatible versions of software

[dcxSt]

In branch py38-dev
requirements.txt

cython
future
katcp
numpy==1.25 # compatibility with RPI
odict
tornado==4.4 # katcp depends on tornado<5
redis
tftpy
progressbar2
#ipython reqs for py3
traitlets
jedi
parso
ipython
requests

[jkocz]

The current newer tornado and numpy seem to work for some applications? (Communication with rfsoc boards, and vcu128 microblaze seems fine).

I'm wondering if there's a SNAP specific functionality that is called in katcp that breaks that requires the tornado<5? It would be great if we could update the RPI/katcp functionality to work with current versions instead of limiting...

[EmilianoToledo]

I'm trying to reinstall casperfpga on a new Ubuntu OS (20.04.6 LTS), with Python 3.8, and I get lots of incompatible versions, tried your reqs with errors still, what OS are you working with? Thanks