Update Sign in with Google setup illustration

[tofumatt]

Feature Description

After a discussion with @sigal-teller and @wpdarren, we're going to update the illustration used in the setup screen for Sign in with Google, see: https://www.figma.com/design/h9yGR15Pg2DUtgERW4AFAv/Sign-in-with-Google?node-id=600-1513&t=cf9I4eYhdUYKy9bh-4

Before

After

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Acceptance criteria

• The illustration used during the Sign in with Google module setup should be replaced with the version in this Figma design: https://www.figma.com/design/h9yGR15Pg2DUtgERW4AFAv/Sign-in-with-Google?node-id=600-1513&t=cf9I4eYhdUYKy9bh-4

Implementation Brief

• [ ] In assets/js/modules/sign-in-with-google/components/setup/SetupForm.js
  • Replace the existing SVG graphic with the one from Figma linked in the AC

Test Coverage

• Update VRT images

QA Brief

Changelog entry

[tofumatt]

IB ✅

[tofumatt]

(This was missing an estimate, but I marked it as a 3 since it's very straightforward.)