chore(deps): update dependency @types/node to v11.15.50 (#994)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package-lock.json

@@ -66,7 +66,7 @@
     "@commitlint/config-angular": "8.2.0",
     "@types/chai": "4.2.13",
     "@types/mocha": "5.2.7",
-    "@types/node": "11.15.43",
+    "@types/node": "11.15.50",
     "@types/node-sass": "4.11.0",
     "@types/sprintf-js": "1.1.2",
     "cat": "0.2.0",