Tenant UI: Update eslint to 9.x+

[loneil]

Tenant UI apps (node API and Vue FE) use eslint and right now updating from version 8 to 9 would need some additional configuration tweaks it appears

https://eslint.org/docs/latest/use/migrate-to-9.0.0

On the frontend updating eslint can allow the following dev dependencies to be updated as well and should be done at the same time
@typescript-eslint/eslint-plugin
@typescript-eslint/parser
@vue/eslint-config-prettier
@vue/eslint-config-typescript

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[github-actions]

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