Version bump to BP1A.250405.003.Y1 [core/build_id.mk]

Change-Id: Ibd4e91d69708cf03d3ec6765bc2b6d390c1045e4
diff --git a/core/build_id.mk b/core/build_id.mk
index b5240b7..559fa32 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=BP1A.250405.003
+BUILD_ID=BP1A.250405.003.Y1