Update dependency rxjs to v5.5.8

Author: renovate-bot

basic/package.json

@@ -28,7 +28,7 @@
     "core-js": "2.5.3",
     "graphql-config-parser": "1.2.1",
     "graphql-tag": "1.3.2",
-    "rxjs": "5.5.7",
+    "rxjs": "5.5.8",
     "ts-helpers": "1.1.2",
     "zone.js": "0.8.20"
   },

basic/yarn.lock

@@ -4534,9 +4534,9 @@ run-queue@^1.0.0, run-queue@^1.0.3:
   dependencies:
     aproba "^1.1.1"
 
-rxjs@5.5.7:
-  version "5.5.7"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.7.tgz#afb3d1642b069b2fbf203903d6501d1acb4cda27"
+rxjs@5.5.8:
+  version "5.5.8"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.8.tgz#b2b0809a57614ad6254c03d7446dea0d83ca3791"
   dependencies:
     symbol-observable "1.0.1"