Bump vue from 2.5.13 to 2.5.16 in /apps/updatenotification

Bumps [vue](https://github.com/vuejs/vue) from 2.5.13 to 2.5.16.
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](https://github.com/vuejs/vue/compare/v2.5.13...v2.5.16

)

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