[DO NOT MERGE] Update Security String to 2018-01-05 from 2018-01-01
Bug: 69257226
(cherry picked from commit b58800a22c230eeac0d2a6fe5ded7a76a95a4a5f)

Change-Id: I0b71e023c07becb9d0798bce4832e6c338d496a6
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index d8f27b7..23fb68e 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -181,7 +181,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2018-01-01
+      PLATFORM_SECURITY_PATCH := 2018-01-05
 endif
 
 ifndef PLATFORM_BASE_OS