Update Security String to 2021-02-05

Bug: 175313938
Change-Id: I6a1139d288c24a11289fc53c9022fd6d70acd8e6
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 6ac90d8..e610490 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 := 2021-01-05
+      PLATFORM_SECURITY_PATCH := 2021-02-05
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH