fix(deps): update dependency vuetify to v2.6.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
vuetify (source)	2.6.3 -> 2.6.4

---

Release Notes

vuetifyjs/vuetify

### [`v2.6.4`](https://togithub.com/vuetifyjs/vuetify/releases/v2.6.4) [Compare Source](https://togithub.com/vuetifyjs/vuetify/compare/v2.6.3...v2.6.4) ##### :wrench: Bug Fixes - **VDialog/VMenu:** remove duplicate toggleable mixin ([860be6b](https://togithub.com/vuetifyjs/vuetify/commit/860be6b0bff74b6cd81320259879ae9dc5a77f1d)), closes [#​14719](https://togithub.com/vuetifyjs/vuetify/issues/14719) - **VPagination:** get available width before initial mount ([472bbb4](https://togithub.com/vuetifyjs/vuetify/commit/472bbb4afd3da91656702b62f8c385cf61de1ccd)), closes [#​14590](https://togithub.com/vuetifyjs/vuetify/issues/14590) - **VSelect:** update menu position on selection change ([5974a84](https://togithub.com/vuetifyjs/vuetify/commit/5974a840b703cb8dbfba615cac4d6a16cf30ebb9)), closes [#​14688](https://togithub.com/vuetifyjs/vuetify/issues/14688)

---

Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.