Version bump to SD1A.210729.007 [core/build_id.mk]

Change-Id: I18c60255baf4d57643992e8b5661436b9d136f54
diff --git a/core/build_id.mk b/core/build_id.mk
index c6cee54..b2a63b5 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=SD1A.210729.006
+BUILD_ID=SD1A.210729.007