Upgrade bazlets to latest master to build with 2.16-rc3 API

Change-Id: I582718f7dd2f9be9017516ac89d0aa3608c72238
diff --git a/WORKSPACE b/WORKSPACE
index 71333d8..6b0b009 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "cc2766bbec1af19eb4d1ed2f32e4ed9a503df32b",
+    commit = "d044cd60d37e302d9ac324f7a2c4e48b4011d4e6",
     #local_path = "/home/<user>/projects/bazlets",
 )