update typescript package

Author: dlech

package-lock.json

@@ -391,7 +391,7 @@
         "@types/temp": "^0.8.3",
         "@types/zen-observable": "^0.5.3",
         "tslint": "^5.8.0",
-        "typescript": "^3.1.4",
+        "typescript": "^3.7.4",
         "vscode": "^1.1.33"
     },
     "dependencies": {