Update security string to 2023-10-05

Change-Id: Ib28a77cbf8bd7cfd5cce3ac604c0895c2eb1879e
(cherry picked from commit 625542c3a5df609cd9020dc1c4a13be5f00fbfb0)
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 82c3dd2..caec943 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -246,7 +246,7 @@
     #  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 := 2023-09-05
+      PLATFORM_SECURITY_PATCH := 2023-10-05
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH