Correct version of 1.31.1

Change-Id: Ib86e13280a289ecac4692415e1003d5b76f21601
diff --git a/VERSION b/VERSION
index 73462a5..f225a78 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.5.1
+2.5.2