Update dependency @octokit/graphql-schema to v15.20.0 (#981)

* Update dependency @octokit/graphql-schema to v15.20.0

* Generated by GitHub Actions (ts / generate)

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package.json

@@ -18,7 +18,7 @@
     "@graphql-codegen/import-types-preset": "3.0.0",
     "@graphql-codegen/typescript": "4.0.7",
     "@graphql-codegen/typescript-operations": "4.2.1",
-    "@octokit/graphql-schema": "15.19.0",
+    "@octokit/graphql-schema": "15.20.0",
     "@tsconfig/node20": "20.1.4",
     "@types/jest": "29.5.12",
     "@types/node": "20.14.2",

src/generated/graphql-types.ts

@@ -6595,6 +6595,10 @@ export type Enterprise = AnnouncementBanner & Node & {
    * personal access tokens (classic) with read:enterprise or admin:enterprise scope.
    */
   ownerInfo?: Maybe<EnterpriseOwnerInfo>;
+  /** The raw content of the enterprise README. */
+  readme?: Maybe<Scalars['String']['output']>;
+  /** The content of the enterprise README as HTML. */
+  readmeHTML: Scalars['HTML']['output'];
   /** The HTTP path for this enterprise. */
   resourcePath: Scalars['URI']['output'];
   /** The URL-friendly identifier for the enterprise. */