Version bump to AP3A.240905.015.A1 [core/build_id.mk]

Change-Id: I099f4156070c92d18df9d7ca34d399626a5b7843
diff --git a/core/build_id.mk b/core/build_id.mk
index ff456ff..1e6cb87 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=AP3A.240905.015
+BUILD_ID=AP3A.240905.015.A1