Update Rocket.Chat to 2.3.1

library/rocket.chat

@@ -1,5 +1,5 @@
 Maintainers: Rocket.Chat Image Team <[email protected]> (@RocketChat)
 GitRepo: https://github.com/RocketChat/Docker.Official.Image.git
 
-Tags: 2.2.0, 2.2, 2, latest
-GitCommit: 6c060cccf12add88981d25bba5a0ab3b9459bba8
+Tags: 2.3.1, 2.3, 2, latest
+GitCommit: 818db3f141e9f6e7d1a3374e4eaf586d118da0e1