Add feature spec for change password
user
```ruby
# frozen_string_literal: true

require 'rails_helper'

describe 'Change password features' do
  it 'when user successfully change password' do
    user = create(:user, email: 'me@example.com', password: 'eidii7EeooVe8ahk')

    session = create(:session, user: user, token: 'token123')

    visit '/'

    page.execute_script <<-JAVASCRIPT
      localStorage.clear();
      localStorage.setItem('token', 'token123');
    JAVASCRIPT

    visit '/change_password'

    expect(page).to have_content('Change password')

    expect(page).to have_content('Current password (leave empty if you are Sign up via Eve Online SSO)')

    expect(page).to have_content('New password')

    expect(page).to have_content('New password confirmation')

    fill_in 'old_password', with: 'eidii7EeooVe8ahk'
    fill_in 'password', with: '7bYu9qK1'
    fill_in 'password_confirmation', with: '7bYu9qK1'
    find('#change_password_button').click # TODO: change to 'click'

    expect(page).to have_content('Password was successful changed!')

    current_token = page.evaluate_script <<-JAVASCRIPT
      localStorage.getItem('token');
    JAVASCRIPT

    expect(current_token).not_to eq('token123')

    user.reload

    expect(user.authenticate('eidii7EeooVe8ahk')).to eq(false)

    expect(user.authenticate('7bYu9qK1')).to eq(user)
  end
end
```
assistant