Update Security String to 2023-10-01

Bug: 295937899
Change-Id: Iceeda64124c3152e9b31c0b6fa994fe77f90fa3b
Merged-In: Ib9596152fe20b412bf7f5e90a19b55f3c0f5523f
Merged-In: I0e2c4746c9042f7caf76cafa1db50f7c93cd211f
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 850f53f..fa3febd 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 := 2023-09-01
+    PLATFORM_SECURITY_PATCH := 2023-10-01
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH