no issue
- bumped dependency
- fixed all new lint failures
- removed deprecated `ember-cli-eslint`
- it was tying us to an old version of `eslint` resulting in missing rule definition errors when linting was run as part of `yarn dev` and `ember test`
- we run linting separately in CI so we don't need linting to run _again_ on each of our ember test runs
no issue
- PasswordValidator was only adding a function to the base class but it introduced a confusing inheritance hierarchy that's easier to reason about when it's a mixin instead
- swapped the `this.properties =` and `this._super()` calls in the `init` function of `new-user` so that the default can actually be applied
- previously the BaseValidator `init` method was doing `this.properties = []` which meant the default fallback in extended classes wouldn't work
