Update dependency @types/node to v13.13.50

Author: renovate-bot

package-lock.json

@@ -13,7 +13,7 @@
   "devDependencies": {
     "@types/jasmine": "3.6.9",
     "@types/jasminewd2": "2.0.8",
-    "@types/node": "13.13.49",
+    "@types/node": "13.13.50",
     "husky": "4.3.8",
     "lint-staged": "10.5.4",
     "prettier": "2.2.1",