D14686 added autopep8 which implicitly dragged in
toml and pycodestyle which were not versioned, this
diff adds explicit versions of these deps so there
won't be any version changes if we rebuild in the
future.
The versions set are the same versions picked today
by pip, so no rebuild should be needed for mac/linux
that have already landed the D14686 change (but it
wouldn't hurt to validate that these are indeed the
versions that got packaged)