Update Rocket.Chat to 0.7.0

Ping @Sing-Li

library/rocket.chat

@@ -1,7 +1,6 @@
 # maintainer: Rocket.Chat Image Team <[email protected]>
 
-0.4.0: git://github.com/RocketChat/Docker.Official.Image@607714350ff360aa5e0e493fd2cb6057684a980b
-0.4: git://github.com/RocketChat/Docker.Official.Image@607714350ff360aa5e0e493fd2cb6057684a980b
-0: git://github.com/RocketChat/Docker.Official.Image@607714350ff360aa5e0e493fd2cb6057684a980b
-latest: git://github.com/RocketChat/Docker.Official.Image@607714350ff360aa5e0e493fd2cb6057684a980b
-
+0.7.0:  git://github.com/RocketChat/Docker.Official.Image@69f967fd139561a7eee0af140a8a07c28899731a
+0.7:    git://github.com/RocketChat/Docker.Official.Image@69f967fd139561a7eee0af140a8a07c28899731a
+0:      git://github.com/RocketChat/Docker.Official.Image@69f967fd139561a7eee0af140a8a07c28899731a
+latest: git://github.com/RocketChat/Docker.Official.Image@69f967fd139561a7eee0af140a8a07c28899731a