Ktlint 0.38.0 breaks indentation checking

Ktlint 0.38.0 [removed support](https://github.com/pinterest/ktlint/releases/tag/0.38.0) for configuring continuation indentation separate from non-continuation indentation via `.editorconfig` files. Since our code style uses an indent of 2 spaces with a continuation indent of 4 spaces, ktlint no longer accepts our code. Tracked in https://github.com/pinterest/ktlint/issues/816.

Until this is fixed, I've just disabled ktlint's indentation checking entirely so we can start using kotlin 1.4.