Update axios to 1.x

[reinink]

This PR updates axios to 1.x.

As part of this update we've replaced the internal cancelToken handling with the new AbortController handling available in the newer versions of axios, as cancel tokens have been deprecated. However, the external API (onCancelToken() visit callback) has not changed for backwards compatibility reasons.

Also included with this update is a fancy new router.cancel() method that lets you easily cancel the currently active visit, effectively removing the need to ever use the onCancelToken() visit callback again.

import { router } from '@inertiajs/vue3'

router.cancel()