Bump vuetify from 2.3.19 to 2.6.10 in /client

Bumps [vuetify](https://github.com/vuetifyjs/vuetify/tree/HEAD/packages/vuetify) from 2.3.19 to 2.6.10.
- [Release notes](https://github.com/vuetifyjs/vuetify/releases)
- [Commits](https://github.com/vuetifyjs/vuetify/commits/v2.6.10/packages/vuetify)

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

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Author: dependabot[bot]