By default, the Raleway font for the cookie banner is loaded from the Google's CDN, but this can be customized via the "Colors and styling" sidebar menu as in the screenshot below - 

There are 2 configurable options for the "Font Source" are - "Google" and "Browser Default"; the latter choice will load fonts directly from the browser.

After selecting the required setup - please click the green "Save" button to apply the changes.