Upgrade bazlets to latest stable-3.0 to build with 3.0.13 API

Change-Id: I7cc7d1a682cba94532214998aba0ec84b461741b

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index f484209..8ed3818 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "6d2b8f41ed34dad925b767399d1e4be378abb029",
+    commit = "a010a539824bd467059f414412a47b80101352d7",
     #local_path = "/home/<user>/projects/bazlets",
 )