Update bazlets to latest revision on master

Bug: Issue https://github.com/GerritCodeReview/gitiles/issues/1
Change-Id: I5645c1be923216f42c11c59235306c5e1f96b2d4

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 1ce75d4..1488855 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//tools:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "a8bf43a97a2a655752204811d1355b180b082047",
+    commit = "13330934a0e577d60719551ffb746f64b0bb9637",
     # local_path = "/home/<user>/projects/bazlets",
 )