Upgrade bazlets to latest stable-2.16 to build with 2.16.9 API

Change-Id: Ifc51a9ac26b01a8ad2ed8d0ebd5ca384c5f39ac2
diff --git a/WORKSPACE b/WORKSPACE
index 90b7df8..c1e7e3f 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "d100b6aad6b37e7db8fa141020c882dc97fb7723",
+    commit = "8105536e13d04c7c595a56ce21867471ce47b36d",
     #local_path = "/home/<user>/projects/bazlets",
 )