Upgrade bazlets to latest master to build with 3.2.2 API

Change-Id: Ie2ec73cb694a9ed671608f027daf8978c7a02861

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 3ef89cd..842f6c0 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "53cfe52b1b691040fd03dfe025c0a381df48c6ee",
+    commit = "74f9d8e76d5014d218ae6fe55127a5288c9a32c3",
     #local_path = "/home/<user>/projects/bazlets",
 )