Version bump to AP1A.231201.004.C1 [core/build_id.mk]

Change-Id: I1d4c6f3e04e621f387b5dce44e418b591ae5fc01
diff --git a/core/build_id.mk b/core/build_id.mk
index 3991a5f..008a504 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-BUILD_ID=AP1A.231201.004
+BUILD_ID=AP1A.231201.004.C1