Upgrade bazlets to latest stable-2.16 to build with 2.16.5 API

Change-Id: Ifae1e4737dbdd3a496d6791be035e73b63a16e67
diff --git a/WORKSPACE b/WORKSPACE
index be918bf..d22a85a 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "c2227415d5044f8439bd47edffb0f052f8da2ac5",
+    commit = "b084bd74743f4303971a2a057bcea4f3352ddf4e",
     #local_path = "/home/<user>/projects/bazlets",
 )