fix: fury preview is no longer required (#52)

Co-authored-by: Octokit Bot <33075676+octokitbot@users.noreply.github.com>

Author: github-actions[bot]

scripts/update-endpoints/generated/endpoints.json

@@ -41,14 +41,8 @@
     "isLegacy": false,
     "description": "Use this endpoint to complete the handshake necessary when implementing the [GitHub App Manifest flow](https://developer.github.com/apps/building-github-apps/creating-github-apps-from-a-manifest/). When you create a GitHub App with the manifest flow, you receive a temporary `code` used to retrieve the GitHub App's `id`, `pem` (private key), and `webhook_secret`.",
     "documentationUrl": "https://developer.github.com/v3/apps/#create-a-github-app-from-a-manifest",
-    "previews": [{ "name": "fury" }],
-    "headers": [
-      {
-        "name": "accept",
-        "value": "application/vnd.github.fury-preview+json",
-        "required": true
-      }
-    ],
+    "previews": [],
+    "headers": [],
     "parameters": [
       {
         "name": "code",

src/generated/endpoints.ts

@@ -123,10 +123,7 @@ const Endpoints: EndpointsDefaultsAndDecorations = {
       "POST /content_references/{content_reference_id}/attachments",
       { mediaType: { previews: ["corsair"] } }
     ],
-    createFromManifest: [
-      "POST /app-manifests/{code}/conversions",
-      { mediaType: { previews: ["fury"] } }
-    ],
+    createFromManifest: ["POST /app-manifests/{code}/conversions"],
     createInstallationToken: [
       "POST /app/installations/{installation_id}/access_tokens",
       { mediaType: { previews: ["machine-man"] } }