bump: update dependencies versions

package.json

@@ -24,8 +24,8 @@
     "@nestjs/testing": "^5.0.0",
     "@nestjs/websockets": "^5.0.0",
     "reflect-metadata": "^0.1.12",
-    "rxjs": "^5.5.6",
-    "typescript": "^2.6.2"
+    "rxjs": "^6.0.0",
+    "typescript": "^2.8.0"
   },
   "devDependencies": {
     "@types/express": "^4.0.39",
@@ -38,7 +38,7 @@
     "supertest": "^3.0.0",
     "ts-jest": "^21.2.4",
     "ts-loader": "^4.1.0",
-    "ts-node": "^4.1.0",
+    "ts-node": "^6.0.0",
     "tsconfig-paths": "^3.1.1",
     "tslint": "5.3.2",
     "webpack": "^4.2.0",