Upgrade bazlets to latest master

Includes further fixes for --incompatible_disallow_legacy_java_provider.

Change-Id: Ida6f85864887148ee921a46e73f5052405c7831c

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 6c65ed8..3673a0e 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "1ddb1d6c71b77972a89aa0a717f6250ef256d166",
+    commit = "7744d119c623494f7c7ec621e20cd66ea5bc04f6",
     #local_path = "/home/<user>/projects/bazlets"
 )