devel/basu: unbreak fetch due to recompression

> Fetched file size mismatch (expected 239187, actual 239042)

$ gzip -l basu-v0.2.1.tar.gz

compressed uncompressed  ratio uncompressed_name

• 239187 1474560 83.7% basu-v0.2.1.tar

+ 239042 1474560 83.7% basu-v0.2.1.tar

Reported by: Matthias Apitz
Tested by: tar -tv, diff -ur, mtree -R time -K sha256