fix: deps/v8/tools/turbolizer/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-DIFF-14917201

Author: snyk-bot

deps/v8/tools/turbolizer/package.json

@@ -27,7 +27,7 @@
     "local-web-server": "^2.6.0",
     "mocha": "^5.2.0",
     "rollup": "^0.68.2",
-    "ts-mocha": "^2.0.0",
+    "ts-mocha": "^11.0.0",
     "tslint": "^5.12.0",
     "typescript": "^3.2.2"
   }