Hello guix,

I use csvkit and noticed it broke after the upgrade to python 3.10

http://ci.guix.gnu.org/build/1263118/details

Updating it and a couple dependencies fixed it so here's a patch. I also
converted the `*-inputs` fields to new style while I was at it.

The addition of `(gnu package base)` among dependencies is because of
`python-agate` now wanting `glibc-locales` for one of its tests. I hate to have
had to write the previous sentence because a `((gnu package base) #:select
(glibc-locales))` would have carried exactly as much information and remained in
the code where it could be useful in the future while this email will be
long-forgotten when someone needs it. But the rest of the imports are implicit
(don't want to break the convention) and someone recently argued again against
explicit imports on the chan. I therefore merely point out another situation
where implicit would have saved the day to be sure not to waste evidence, should
the community want to weigh the benefits and drawbacks of each approach some
day.

Nice day to you all,

Alice