[Schema Inaccuracy] `labels` property in the `pull-request-simple` schema should not have optional properties

[wolfy1339]

Schema Inaccuracy

In the pull-request-simple and the pull-request schemas, the label property which is an object, has all of it's properties marked as optional.

Expected

The labels property on the pull-request-simple and pull-request schema should have all it's properties set as required.

"pull-request-simple": {
        "title": "Pull Request Simple",
        "description": "Pull Request Simple",
        "type": "object",
        "properties": {
...
          "labels": {
            "type": "array",
            "items": {
              "type": "object",
+             "required": ["id", "node_id", "url", "name", "description", "color", "default"],
              "properties": {
                "id": {
                  "type": "integer"
                },
                "node_id": {
                  "type": "string"
                },
                "url": {
                  "type": "string"
                },
                "name": {
                  "type": "string"
                },
                "description": {
                  "type": "string"
                },
                "color": {
                  "type": "string"
                },
                "default": {
                  "type": "boolean"
                }
              }
            }
...
      "pull-request": {
        "type": "object",
        "title": "Pull Request",
        "description": "Pull requests let you tell others about changes you've pushed to a repository on GitHub. Once a pull request is sent, interested parties can review the set of changes, discuss potential modifications, and even push follow-up commits if necessary.",
        "properties": {
...
          "labels": {
            "type": "array",
            "items": {
              "type": "object",
+             "required": ["id", "node_id", "url", "name", "description", "color", "default"],
              "properties": {
                "id": {
                  "type": "integer"
                },
                "node_id": {
                  "type": "string"
                },
                "url": {
                  "type": "string"
                },
                "name": {
                  "type": "string"
                },
                "description": {
                  "type": "string"
                },
                "color": {
                  "type": "string"
                },
                "default": {
                  "type": "boolean"
                }
              }
            }

Reproduction Steps

This issue isn't reproducible on the API, it only comes up with downstream consumers of the OpenAPI schema, example, when TypeScript types are generated from this schema in @octokit/openapi-types

/ref octokit/openapi-types.ts#21
/cc @christophehurpeau

[wolfy1339]

This is still an issue as of 2021-05-14

[gr2m]

ping @xuorig @bruce

[wolfy1339]

This issue has been brought up again in octokit/rest.js#73
This time with GHES 2.22