Upgrade bazlets to latest stable-2.16 to build with 2.16.14 API

Change-Id: I589b5fd476e6a5edfa2f6836dd55ce80ca3b14df

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 9d32d30..fa830e1 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "23d849dfd1876c1b4b88efa55a4f716895e33fa3",
+    commit = "100fe2760d3a71a97cb1e04a4424e91f27e88f12",
     #local_path = "/home/<user>/projects/bazlets",
 )