Version bump to AP4A.241205.013.B1 [core/build_id.mk]

Change-Id: I470e765ded52826376b74d3b263b2519ca625ef1
diff --git a/core/build_id.mk b/core/build_id.mk
index fcc0f39..4d19d90 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=AP4A.241205.013
+BUILD_ID=AP4A.241205.013.B1