chore(package): update @types/node to version 10.5.5

Closes #40

Author: greenkeeper[bot]

package.json

@@ -34,7 +34,7 @@
     "@angular/language-service": "6.0.3",
     "@types/jasmine": "^2.8.8",
     "@types/jasminewd2": "^2.0.3",
-    "@types/node": "^8.10.18",
+    "@types/node": "^10.5.5",
     "codelyzer": "^4.3.0",
     "jasmine-core": "^2.99.1",
     "jasmine-spec-reporter": "^4.2.1",