python3-libarchive-c: upgrade 3.1 -> 3.2

This release fixes the seek callbacks passed to libarchive by the custom_reader and stream_reader function.
(https://github.com/Changaco/python-libarchive-c/pull/116

)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>