Update bazlets to latest revision on stable-2.14

Change-Id: I314d365953591eb90cc88858399630e29d408e14
diff --git a/WORKSPACE b/WORKSPACE
index ee1b63b..32acdf0 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "c183e91a343af59e7bb021c19fee62a1dc6ea6ce",
+    commit = "21e71dc9abb42f5ac80c51d2df2a374c3414b9d2",
     #    local_path = "/home/<user>/projects/bazlets",
 )