Version bump to UP1A.230623.015 [core/build_id.mk]

Change-Id: I65e005b249bc875a9615ea6b109f65600c33cac7
diff --git a/core/build_id.mk b/core/build_id.mk
index a9576e9..1cf41be 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=UP1A.230623.014
+BUILD_ID=UP1A.230623.015