Update GutenbergKit

[crazytonyli]

Following up #25208 (comment). I have published the GBK release on my mac.

[dangermattic]

	1 Warning
⚠️	This PR is assigned to the milestone 26.7. The due date for this milestone has already passed. Please assign it to a milestone with a later deadline or check whether the release for this milestone has already been finished.

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[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Configuration	Release-Alpha
	Build Number	30957
	Version	PR #25259
	Bundle ID	org.wordpress.alpha
	Commit	d0d04f3
	Installation URL	4o4hre7e1mvvg

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[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Configuration	Release-Alpha
	Build Number	30957
	Version	PR #25259
	Bundle ID	com.jetpack.alpha
	Commit	d0d04f3
	Installation URL	6rh1o2iu02228

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[wpmobilebot]

🤖 Build Failure Analysis

This build has failures. Claude has analyzed them - check the build annotations for details.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud