[ci] Build fuzz tests in CI, to avoid breaking them by accident
[ci] Build fuzz tests in CI, to avoid breaking them by accident

Signed-off-by: Miguel Young de la Sota <71b8e7f4945fd97b98544cf897992af89646547a@google.com>

lowRISC/manticore,lowRISC/manticore,lowRISC/manticore