Go 1.27 changes compress/flate output, which also changes archive/zip
byte output. The HTTP zip download tests currently compare raw zip bytes
against golden files, so they fail even though the generated zip archives
contain the expected files.
Compare zip entries and decompressed contents instead of the exact
compressed byte stream.
Signed-off-by: Mikel Olasagasti Uranga <mikel@olasagasti.info>