Bump vuetify from 3.4.8 to 3.4.9 in /frontend

Bumps vuetify from 3.4.8 to 3.4.9.

Release notes

Sourced from vuetify's releases.

v3.4.9

🚀 Features

• VCalendar: port to v3 labs (#16803) (3158d0c), closes #13469

Commits

• f343549 chore(release): publish v3.4.9
• f88b25a docs(VCalendar): fix api types
• 3158d0c feat(VCalendar): port to v3 labs (#16803)
• See full diff in compare view

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