web: replace PayPal with Canva on the logged out search page
Created by: LawnGnome
As requested on Slack, this PR replaces the PayPal logo with the Canva logo. Of the available options, I've used the RGB wordmark, since it works in both light and dark modes and has the right approximate shape.
Test plan
Tested using the SearchPage storybook.
App preview:
Check out the client app preview documentation to learn more.