build(deps-dev): bump wrangler in /examples/cloudflare-workers

Bumps [wrangler](https://github.com/cloudflare/workers-sdk/tree/HEAD/packages/wrangler) from 2.21.2 to 3.81.0.
- [Release notes](https://github.com/cloudflare/workers-sdk/releases)
- [Changelog](https://github.com/cloudflare/workers-sdk/blob/main/packages/wrangler/CHANGELOG.md)
- [Commits](https://github.com/cloudflare/workers-sdk/commits/[email protected]/packages/wrangler)

---
updated-dependencies:
- dependency-name: wrangler
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

examples/cloudflare-workers/package.json

@@ -9,7 +9,7 @@
     "publish": "wrangler publish"
   },
   "devDependencies": {
-    "wrangler": "^2.20.0"
+    "wrangler": "^3.81.0"
   },
   "dependencies": {
     "@upstash/redis": "latest"