Version bump to BP2A.250605.031.A3 [core/build_id.mk]

Change-Id: Icfcc58001000d1f6a510c645afc547528d5c29ed
diff --git a/core/build_id.mk b/core/build_id.mk
index 9067611..98ccf47 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=BP2A.250605.031.A2
+BUILD_ID=BP2A.250605.031.A3