Bump vue from 2.5.17 to 3.0.0 in /example

Bumps [vue](https://github.com/vuejs/core) from 2.5.17 to 3.0.0.
- [Release notes](https://github.com/vuejs/core/releases)
- [Changelog](https://github.com/vuejs/core/blob/v3.0.0/CHANGELOG.md)
- [Commits](https://github.com/vuejs/core/commits/v3.0.0)

---
updated-dependencies:
- dependency-name: vue
  dependency-type: direct:production
...

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

Author: dependabot[bot]

example/package-lock.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "apexcharts": "^3.24.0",
-    "vue": "^2.5.17",
+    "vue": "^3.0.0",
     "vue-apexcharts": "^1.5.3",
     "vue-router": "^3.0.1"
   },