Upgrade bazlets to latest master to build with 3.2.3 API

Change-Id: I98883eb9aced612c20162c2d91b1497eddf825ce

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index db6d082..950e7f4 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "74f9d8e76d5014d218ae6fe55127a5288c9a32c3",
+    commit = "0f81174e3d1b892a1342ebc75bb4bbb158ae0efe",
     #local_path = "/home/<user>/projects/bazlets",
 )