Security update for php7 (moderate)

This update for php7 fixes the following issues:

The following security vulnerabilities were fixed:

• CVE-2018-14851: Fixed an out-of-bound read in
  exif_process_IFD_in_MAKERNOTE, which could be exploited by an attacker
  via crafted JPG files, and could result in an application crash.
  (bsc#1103659)

• CVE-2017-9120: Fixed an buffer overflow in mysqli_real_escape_string,
  which could be exploited via along string and could result in an
  application crash
  or have other unspecified impacts. (bsc#1103661)

This update was imported from the SUSE:SLE-12:Update update project.