Update SPL to 2021-12-05

Bug: 202436544
Change-Id: Ic0dabce4beb09bdd966152c059730677ca5bf5aa
Merged-In: Ie4645b81d47aa677c4237bda8303d6c2e502844f
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index c001c3b..a5e40a0 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 := 2021-11-05
+    PLATFORM_SECURITY_PATCH := 2021-12-05
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH