can-utils: bump version

Fixes following autobuild failure, via defining N_SLCAN, if not
already declared:

http://autobuild.buildroot.net/results/799/799561c928d711ada4070ae5e09f4097dd4091e3/



Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>