fix(deps): bump v-offline from 3.3.1 to 3.4.0 in /example

Bumps [v-offline](https://github.com/vinayakkulkarni/v-offline) from 3.3.1 to 3.4.0.
- [Release notes](https://github.com/vinayakkulkarni/v-offline/releases)
- [Changelog](https://github.com/vinayakkulkarni/v-offline/blob/main/CHANGELOG.md)
- [Commits](v3.3.1...v3.4.0)

---
updated-dependencies:
- dependency-name: v-offline
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

example/package.json

@@ -11,7 +11,7 @@
   "dependencies": {
     "ping.js": "^0.3.0",
     "v-github-icon": "^3.0.2",
-    "v-offline": "^3.3.1",
+    "v-offline": "^3.4.0",
     "vue": "^3.2.47"
   },
   "devDependencies": {