Version bump to SQ1D.211205.016.A4 [core/build_id.mk]

Change-Id: Iea03d2e318a267330eadb629f5d62ddce91791da
diff --git a/core/build_id.mk b/core/build_id.mk
index 0d64b31..cd27b67 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=SQ1D.211205.016.A3
+BUILD_ID=SQ1D.211205.016.A4