Update dependency typedoc to v0.15.2

Author: renovate-bot

package-lock.json

@@ -49,7 +49,7 @@
     "ts-node": "8.4.1",
     "tslint": "5.20.1",
     "tslint-config-prettier": "1.18.0",
-    "typedoc": "0.15.0",
+    "typedoc": "0.15.2",
     "typescript": "3.5.3",
     "uuid": "3.3.3"
   },