Update commit-message-length-validator plugin to latest

Update to include the commit:  "Allow to reject commits when subject
or line length exceeds limit".

Change-Id: I2722d5c00c5ad9e37b669f3c5c4a0c8ea2962f95
diff --git a/plugins/commit-message-length-validator b/plugins/commit-message-length-validator
index c0389bb..545000b 160000
--- a/plugins/commit-message-length-validator
+++ b/plugins/commit-message-length-validator
@@ -1 +1 @@
-Subproject commit c0389bbf4441d290c84c0a308e710e4f21a67cd8
+Subproject commit 545000b3a875f514f4112e0c0c50958df6078452