Update Security String to 2019-06-05

Bug:129374896
Change-Id: I82bf91c0947fdc45db025a8fc0c069f718c7e1c3
Merged-In: 2c26c3d4c0314f8a3f905e5a7081556f7b4b353a
(cherry picked from commit 603c06a1401f19da270b2425b4402779568a4cba)
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 80e5007..07e6c95 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -231,7 +231,7 @@
     #  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 := 2019-05-05
+      PLATFORM_SECURITY_PATCH := 2019-06-05
 endif
 
 ifndef PLATFORM_SECURITY_PATCH_TIMESTAMP