chore(ruff): cleanup setup.py whitespace, comprehensions etc. Fixes: replace [f for f in ...] with list(...) replace else block after return in if true case use with open() when reading announcement.txt add trailing , in lists. whitespace normalizing

[run]

# ignore the dist utils. They are not part of the code base
# we are going to test. They are used by maintainers only.
omit = roundup/dist/*