Upgrade bazlets to latest master to build with 3.2.0-rc0 API

Change-Id: I344bd635787ba33942a466026bca0ecc93c3f835

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 0604bca..687b80a 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "cd715d269734e7bb0aa2fc4a01d2d2e279631cc7",
+    commit = "5c26af9e0374ede4cd67939be972adf6c4cda791",
     #local_path = "/home/<user>/projects/bazlets"
 )