Upgrade bazlets to latest master

To use the now mandatory https protocol for MAVEN_CENTRAL.

Bug: Issue 12170
Change-Id: I24aab51fa8f5bb67e1da6dbcd3c0c7d9f15b9588
diff --git a/WORKSPACE b/WORKSPACE
index 7e0aae3..8d03fe2 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "968b97fa03a9d2afd760f2e8ede3d5643da390d2",
+    commit = "fbe2b2fd07c95d752dced6b8624c9d5a08e8c6c6",
     #local_path = "/home/<user>/projects/bazlets",
 )