Consider migrating to `fast-deep-equal`

[toastal]

deep-equal is not only 2 orders of magnitude slower than fast-deep-equal, but it's one of the biggest dependency tree limbs in the project containing polyfills that haven't been needed for browsers or Node since 2015. At 38M weekly downloads, it is not a small project either. Swapping dependencies to fast-deep-equal could save consumers kilobytes reap a performance benefit.