Upgrade bazlets to latest stable-3.0

Bug: Issue 13071
Change-Id: I88e0704bea4a4caa07d038b2eab82ad5ddde7d50
diff --git a/WORKSPACE b/WORKSPACE
index 6089c79..5c0cb74 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "1d381f01c853e2c02ae35430a8e294e485635d62",
+    commit = "7472a1104a37d514799100d6556445836e8efe4c",
     #local_path = "/home/<user>/projects/bazlets",
 )