build(deps-dev): bump vue from 2.5.17 to 2.5.21
build(deps-dev): bump vue from 2.5.17 to 2.5.21

Bumps [vue](https://github.com/vuejs/vue) from 2.5.17 to 2.5.21.
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](https://github.com/vuejs/vue/compare/v2.5.17...v2.5.21)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
vue-gl/vue-gl