Upgrade bazlets to latest stable-3.1

Change-Id: I7874971158a67a7b4d725305d270877d35a4f84d

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 9b71bec..ed5abd1 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "f30a992da9fc855dce819875afb59f9dd6f860cd",
+    commit = "65536a2b01b0097ee3237bb48a805ed97ca51467",
     #local_path = "/home/<user>/projects/bazlets",
 )