This update for rubygem-sprockets-2_12 fixes the following issues:
Security issue fixed:
{ "binaries": [ { "ruby2.1-rubygem-sprockets-2_12": "2.12.5-1.4.1" } ] }
"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2018:2176-1.json"