Update Security String to 2020-06-05 am: a52a320ffd

Change-Id: I335efbd36364ee5b71b95c048caf02565446584e
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 9227677..fd0edef 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -240,7 +240,7 @@
     #  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 := 2020-06-01
+      PLATFORM_SECURITY_PATCH := 2020-06-05
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH