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

Change-Id: I55b1414c1ff14126931fa7770981ca93921d13a1
diff --git a/WORKSPACE b/WORKSPACE
index 312f2f4..b8b5622 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "a556cd8183cb66d1a008d096decbcc4a5896df78",
+    commit = "b084bd74743f4303971a2a057bcea4f3352ddf4e",
     #local_path = "/home/<user>/projects/bazlets",
 )