f2fs-tools: upgrade to new upstream stable
f2fs-tools released new stable version, i.e 1.12.0
I posted patch few days ago
Also, tested on stable (3.8) and edge, didn’t noticed any issue.
Would be nice to have new version in new stable (3.9)
(from redmine: issue id 9795, created on 2018-12-26, closed on 2019-03-16)