Upgrade bazlets to latest master revision

Change-Id: I1ac656389d9094f56181f6b0e0f46f2a10e7cd2b

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index a374ec7..b3f373c 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -28,7 +28,7 @@
 load("//tools:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "fbe2b2fd07c95d752dced6b8624c9d5a08e8c6c6",
+    commit = "f30a992da9fc855dce819875afb59f9dd6f860cd",
     # local_path = "/home/<user>/projects/bazlets",
 )