WP 5.9 theme.json schema doesn't allow setting the "version" property to 2

[mrleemon]

Description

The new Twenty Twenty-Two theme ships with a theme.json file with the "version" property set to 2, but the WP 5.9 theme.json schema (https://schemas.wp.org/wp/5.9/theme.json) just allows the 1 value.

Step-by-step reproduction instructions

1. Open a version 2 theme.json file with VS Code
2. Add the WP 5.9 theme.json schema (https://schemas.wp.org/wp/5.9/theme.json) to it
3. The "version" property is highlighted (Value is not accepted)

Screenshots, screen recording, code snippet

Environment info

• WordPress 5.9

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

No

[annezazu]

@mkaz @ryanwelcher can you all chime in here based on your work in this area?

[ryanwelcher]

Looks like it needs to be updated in the 5.9 branch - https://github.com/WordPress/gutenberg/blob/wp/5.9/schemas/json/theme.json#L1070.

[ryanwelcher]

@ajlende do we need to cherry-pick #36917 into the 5.9 branch?

[ajlende]

This affected more than just the version tag. It looks like not all of the commits were labeled for inclusion in the release. I added the Backport to WP Minor Release label to everything affected, so the changes should be reflected when 5.9.1 lands.

[ocean90]

The version was updated in b23854a.