Bump rxjs from 5.5.6 to 5.5.12 in /terminus-ssh (#860)

Bump rxjs from 5.5.6 to 5.5.12 in /terminus-ssh

terminus-ssh/yarn.lock

@@ -2242,9 +2242,9 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     inherits "^2.0.1"
 
 rxjs@^5.4.0:
-  version "5.5.6"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.6.tgz#e31fb96d6fd2ff1fd84bcea8ae9c02d007179c02"
-  integrity sha512-v4Q5HDC0FHAQ7zcBX7T2IL6O5ltl1a2GX4ENjPXg6SjDY69Cmx9v4113C99a4wGF16ClPv5Z8mghuYorVkg/kg==
+  version "5.5.12"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.12.tgz#6fa61b8a77c3d793dbaf270bee2f43f652d741cc"
+  integrity sha512-xx2itnL5sBbqeeiVgNPVuQQ1nC8Jp2WfNJhXWHmElW9YmrpS9UVnNzhP3EH3HFqexO5Tlp8GhYY+WEcqcVMvGw==
   dependencies:
     symbol-observable "1.0.1"