Update commit-message-length-validator plugin revision

- Fix checkstyle warnings

Change-Id: I9c21f81a22fefaad9207f24ff2c4924bca34bf2f
diff --git a/plugins/commit-message-length-validator b/plugins/commit-message-length-validator
index cee1dcd..ecec6df 160000
--- a/plugins/commit-message-length-validator
+++ b/plugins/commit-message-length-validator
@@ -1 +1 @@
-Subproject commit cee1dcd7bdfaa82e2e72ebc382ec13c393892125
+Subproject commit ecec6dfe7ed67431d96acf9dabac3885463900e8