Update bazlets to latest stable-3.1 to build with 3.1.4 API

Change-Id: Ia60575813b7c7afe8ef3e178741aa93eacc0de55

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 3e0036c..5f324ff 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "f30a992da9fc855dce819875afb59f9dd6f860cd",
+    commit = "fc1bfdf008c4b07e7cc4214fdacf25560276f9c4",
     #local_path = "/home/<user>/projects/bazlets",
 )