Log Message:
Update to 2.0.4. From the changelog:

* Fix integer overflow in bidi.c/_isBidi()
* Fix integer overflow in puny_decode.c/decode_digit()
* Improve docs
* Fix idna_free() to idn_free()
* Update fuzzer corpora

Use the .tar.gz distfile again, for the moment, to work around
https://github.com/jmmv/pkg_comp/issues/24 ("can't extract distfiles
with EXTRACT_SUFX=.tar.lz").