Version bump to PSV1.210329.004 [core/build_id.mk]

Change-Id: Iab4c01f45c1f820062cb91319bfaa23740df68bf
diff --git a/core/build_id.mk b/core/build_id.mk
index e40ed82..afc8772 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.
 
-export BUILD_ID=PSV1.210329.003
+export BUILD_ID=PSV1.210329.004