Gutenberg ref update.

CI run: WordPress#10988.

See #64595.

---

I've included a log of the Gutenberg changes with the following command:

```
git log --reverse --format="- %s" b441348bb7e05af351c250b74283f253acaf9138..23b566c72e9c4a36219ef5d6e62890f05551f6cb | sed 's|#\([0-9][0-9]*\)|https://github.com/WordPress/gutenberg/pull/\1|g; /github\.com\/WordPress\/gutenberg\/pull/!d' | pbcopy
```

- Remove experimental property from Icon block (WordPress/gutenberg#75742)
- Real-time collab editing: Fix undo E2E test (WordPress/gutenberg#75740)
- Snackbar: Fix scaling issue with snackbars that update their content via a common id (WordPress/gutenberg#75709)
- Vips and worker-threads packages: remove private flag so that packages can be published to npm (WordPress/gutenberg#75752)
- Update wordpress/vips in root package.json to use a relative path (WordPress/gutenberg#75758)
- Fix change-detection and new-post E2E tests after RTC enabled by default (WordPress/gutenberg#75751)
- Query: Remove content role from block (WordPress/gutenberg#75760)
- `ToggleGroupControl`: Make unselected item color consistent across all variants (WordPress/gutenberg#75737)
- Icon-block: fix global-styles selectors (WordPress/gutenberg#75724)
- RTC: Add cap check for single taxonomy term entities (WordPress/gutenberg#75708)
- Core Data: Create icons entity (WordPress/gutenberg#75773)


git-svn-id: https://develop.svn.wordpress.org/trunk@61705 602fd350-edb4-49c9-b593-d223f7449a82

Author: ellatrix

package.json

@@ -7,7 +7,7 @@
 		"url": "https://develop.svn.wordpress.org/trunk"
 	},
 	"gutenberg": {
-		"ref": "b441348bb7e05af351c250b74283f253acaf9138"
+		"ref": "23b566c72e9c4a36219ef5d6e62890f05551f6cb"
 	},
 	"engines": {
 		"node": ">=20.10.0",