feat: disable @typescript-eslint/key-spacing rule

[aaneitchik]

Because of a recent update to this rule in release v5.50.0, we have new ESLint errors that want code like this:

interface SomeInterface {
  someValue:
    | TypeA
    | TypeB;
}

to be formatted like this (weird spacing here in the example is intentional, that's what it corrects to):

interface SomeInterface {
  someValue:
                          | TypeA
    | TypeB;
}

because it seems the update to the rule doesn't work nicely with unions. While this behavior is probably unintentional, I don't think we need to check this rule anyway since we use Prettier, so we might just disable it.