Security update for git (moderate)

This update for git fixes the following issues:

Security issue fixed:

• CVE-2018-19486: Fixed git that executed commands from the current
  working directory (as if ‘.’ were at the end of $PATH) in certain cases
  involving the run_command() API and run-command.c, because there was
  (bsc#1117257).

This update was imported from the SUSE:SLE-15:Update update project.