[Schema Inaccuracy] owner property in the full-repository schema should not be nullable

[wolfy1339]

Schema Inaccuracy

On the schema, located at components['schemas']['full-repository'], the value of owner can be null. However, a repo has to be owned, so null shouldn't be here.

Expected

owner should be only an object (components['schemas']['simple-user']), not an object or null

"full-repository": {
        "title": "Full Repository",
        "description": "Full Repository",
        "type": "object",
        "properties": {
          "id": {
            "type": "integer",
            "example": 1296269
          },
...
          "full_name": {
            "type": "string",
            "example": "octocat/Hello-World"
          },
          "owner": {
-           "nullable": true,
            "allOf": [
              {
                "$ref": "#/components/schemas/simple-user"
              }
            ]
          },
          "private": {
            "type": "boolean"
          },
...
    }

Reproduction Steps

$ curl -X POST https://api.github.com/repos/{owner}/{repository}

This issue manifests itself in downstream consumers of the OpenAPI schema, example, when TypeScript types are generated from this schema in @octokit/openapi-types

/ref octokit/rest.js#2074

[gr2m]

@xuorig @imwiss This is blocking octokit/rest.js#38. Could you please look into it?

[imwiss]

👋 @wolfy1339 @gr2m we're looking into this, thanks for flagging

[xuorig]

This has been fixed!

[gr2m]

I created a follow up issue about the referenced simple-user schema, which still has nullable: true
#486