Update bazlets to the latest revision on master

- Add optional dir_name argument to gerrit_plugin
- gerrit_plugin: Improve stamping error message
- Fix the error in project properties generation file
- Fix deletion of Sonar Scanner folder
- Automate SonarQube analysis for plugins built with bazel
- Use bazel-cache instead of buck-cache
- project.py: Python 3 compatibility

Change-Id: I8a37c9ee1987f1ef198554f54d243555cf51676f
diff --git a/WORKSPACE b/WORKSPACE
index 9c27b3c..7a31e49 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "8c91ef43828699c7ed33976897991a427dcfe04b",
+    commit = "3a53199198db3f49a43b7708c2c3352670393717",
     #    local_path = "/home/<user>/projects/bazlets",
 )