Revert Rocket.Chat update; build failure

https://github.com/RocketChat/Docker.Official.Image/issues/47

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: 0.65.0, 0.65, 0, latest
-GitCommit: c3adf8e9a18350ab3f48ba32731b232b00604707
+Tags: 0.64.2, 0.64, 0, latest
+GitCommit: 7ec1959e223e61993c652d50e77a90e884b06be9