We follow Chromium and only download the image qemu.x64

Change-Id: I13e06c5646e889af2acfac8c8e9cb971a7a36c56
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3858299
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82791}