build: bump redox_syscall from 0.1.54 to 0.1.55
build: bump redox_syscall from 0.1.54 to 0.1.55

Bumps redox_syscall from 0.1.54 to 0.1.55.

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
coreos/update-ssh-keys,coreos/update-ssh-keys