Update Security String to 2024-04-01

Bug: 325156176
Change-Id: I789fcbffc56a3ca73697ff1e0268fe862c80f2de
Merged-In: I789fcbffc56a3ca73697ff1e0268fe862c80f2de
Merged-In: Id8d88a3a27730910e0b8b099dada0f31c0a14ba8
Merged-In: If81222f13727b8a2c8faf1c685d917ee4697c903
Merged-In: I9edc7171d124f0cfa540fea6f0e06ba877910444
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 2354ea0..985e170 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 := 2024-03-01
+    PLATFORM_SECURITY_PATCH := 2024-04-01
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH