Update Security String to 2021-07-01 am: 5edc0cec47

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/14694771

Change-Id: I1c3b7578852bee9c0d7a989d97ff6668a57ea2ee
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 0ba8952..906232e 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 := 2021-06-01
+      PLATFORM_SECURITY_PATCH := 2021-07-01
 endif
 
 ifndef PLATFORM_SECURITY_PATCH_TIMESTAMP