fix(deps): Upgrade @nextcloud/vue to fix focus-trap compatibility

Upgrade @nextcloud/vue from ^8.27.0 to ^8.34.0 to resolve focus-trap
library version mismatch with the guests app. The mismatch caused
"_setPausedState is not a function" error when opening the guest
invite dialog from the Teams member picker.

Signed-off-by: nfebe <fenn25.fn@gmail.com>

Author: nfebe