Update Security String to 2020-11-01 am: 727715f100

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/12617653

Change-Id: I6c42ee3dff98e790206f127418071682d74826c8
(cherry picked from commit e893ddd27a6849a582ffa914690fa2d0cc8b61d5)
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index fc6a18f..f96fca0 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 := 2020-10-05
+      PLATFORM_SECURITY_PATCH := 2020-11-01
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH