fix: examples/typescript-ex/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-BRACES-6838727
- https://snyk.io/vuln/SNYK-JS-MICROMATCH-6838728

Author: snyk-bot

examples/typescript-ex/package.json

@@ -24,7 +24,7 @@
   },
   "devDependencies": {
     "@types/node": "^14.14.10",
-    "gts": "^3.0.3",
+    "gts": "^4.0.0",
     "typescript": "~4.1.3"
   },
   "dependencies": {