update wporg assets

[jeffpaul]

What?

Closes #513.

Follow up to WordPress/gutenberg#78243 (comment).

Why?

How?

Use of AI Tools

Testing Instructions

Screenshots or screencast

Before	After

Changelog Entry

Changed - Updated plugin banner and icons.

[github-actions]

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Co-authored-by: jeffpaul <jeffpaul@git.wordpress.org>
Co-authored-by: dkotter <dkotter@git.wordpress.org>
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.88%. Comparing base (432e1c6) to head (11650d5).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #546   +/-   ##
==========================================
  Coverage      70.88%   70.88%           
  Complexity      1144     1144           
==========================================
  Files             67       67           
  Lines           5530     5530           
==========================================
  Hits            3920     3920           
  Misses          1610     1610           

Flag	Coverage Δ
unit	70.88% <ø> (ø)

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[dkotter]

This looks good to me but noting there are other places that use the icon that this PR doesn't update, at least:

1. Icon shown in the header of the AI settings page
2. Icon used in the block toolbar for the Content Resizing feature

[dkotter]

I quickly tested locally by just copying the SVG markup into our ai-icon.tsx file but this new icon doesn't work great at the smaller size we show in the admin. Ends up looking blurry/pixelated, which I realize the icon does that on purpose but doesn't work great at small scale:

Now maybe this is a mistake on my end and there's a "better" way to pull that SVG markup into our icon file that would resolve this. But wondering if we need a solid line version of the icon to use in the admin?

[jeffpaul]

@karmatosed perhaps an alt version that appears better that these lower resolutions/sizes?