try to change to node20 from node16

2nd try node.js

use v4 instead of v3 - does this fix node js 20 issue?

simplified tests using newer info from https://docs.github.com/en/enterprise-server@3.11/actions/automating-builds-and-tests/building-and-testing-python

try v5 since v4 still seems to be deprecated even though the docs "seem" to say going from 3 to 4 will fix.

try py 3.9

…uggests it should?)

ignore missing variables (since `_version` is loaded via an include).  to fix CI script failure with code `F821` see respec#135 (comment)

ignore ACIDPH.py because it uses a weird sci notation format AC (i.e. I think `rkal1  = 1.03d-5` should be `rkal1  = 1.03e-5` etc)

set python 3.8 for install to make all the things work

Testx