Update Security String to 2020-08-01

Bug: 158587413
Change-Id: I21b16ed52ef9c7c26a671692c66b06855b147b16
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index edcbf0a..c168b44 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -250,7 +250,7 @@
     #  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 := 2020-07-05
+      PLATFORM_SECURITY_PATCH := 2020-08-01
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH