Upgrade bazlets to latest master

To use the now mandatory https protocol for MAVEN_CENTRAL.

Bug: Issue 12170
Change-Id: I181382a117243fe2a6770c2f92b0642f785bd818

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 7688f82..00ad47a 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "ed210c9f7132b2e1b21d993b85bc55e9623ea4e2",
+    commit = "fbe2b2fd07c95d752dced6b8624c9d5a08e8c6c6",
     #local_path = "/home/<user>/projects/bazlets",
 )