These are backports coming for the 5.6.1 release.
Summary of the following issues:
* [#27970](https://github.com/WordPress/gutenberg/pull/27970) - Fix editor crash when registering a block pattern without `categories` Backport to WP Minor Release [Feature] Inserter [Feature] Patterns [Type] Bug
* [#27733](https://github.com/WordPress/gutenberg/pull/27733) - [Embed block]: Add html and reusable support back Backport to WP Minor Release [Block] Embed [Type] Regression
* [#27727](https://github.com/WordPress/gutenberg/pull/27727) - Add aria labels to box control component inputs/button Backport to WP Minor Release [Feature] UI Components [Package] Components [Type] Bug [a11y] Labelling
* [#27627](https://github.com/WordPress/gutenberg/pull/27627) - HTML Block: Fix editor styles Backport to WP Minor Release [Block] HTML [Type] Regression
* [#27526](https://github.com/WordPress/gutenberg/pull/27526) - Core Data: Normalize `_fields` value for use in `stableKey` Backport to WP Minor Release [Package] Core data [Type] Bug
* [#26705](https://github.com/WordPress/gutenberg/pull/26705) - Fix: Font size picker does not correctly handles big font sizes. Backport to WP Minor Release [Type] Bug
* [#26432](https://github.com/WordPress/gutenberg/pull/26432) - Edit Site: prevent inserter overscroll Backport to WP Minor Release First-time Contributor [Feature] Full Site Editing [Type] Bug
Packages updated:
@wordpress/block-directory@1.17.7
@wordpress/block-editor@5.1.6
@wordpress/block-library@2.26.7
@wordpress/components@11.1.4
@wordpress/core-data@2.24.3
@wordpress/edit-post@3.25.7
@wordpress/edit-site@1.15.7
@wordpress/edit-widgets@1.1.7
@wordpress/editor@9.24.6
@wordpress/format-library@1.25.6
@wordpress/interface@0.10.7
@wordpress/list-reusable-blocks@1.24.4
@wordpress/nux@3.23.4
@wordpress/reusable-blocks@1.0.6
@wordpress/server-side-render@1.19.4
Fixes#52391.
Props gziolo, whyisjake.
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