Update post

curl --request PATCH \
  --url https://api.marblecms.com/v1/posts/{identifier} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "Updated Post Title",
  "content": "<p>Updated content</p>",
  "description": "Updated description",
  "slug": "updated-post-slug",
  "categoryId": "cryitfjp2345kl05weoybfk9",
  "status": "published",
  "tags": [
    "cryitfjp4567no07ygqadhm1"
  ],
  "authors": [
    "cryitfjp3456lm06xfpzcgl0"
  ],
  "featured": true,
  "coverImage": "https://media.marblecms.com/new-cover.jpg",
  "publishedAt": "2024-02-01T10:00:00Z",
  "attribution": {
    "author": "<string>",
    "url": "<string>"
  }
}
'

{
  "post": {
    "id": "cryitfjp5678mn09qrstuvwx",
    "slug": "updated-post-slug",
    "title": "Updated Post Title",
    "status": "published",
    "featured": true,
    "publishedAt": "2024-02-01T10:00:00.000Z",
    "updatedAt": "2024-02-01T12:00:00.000Z"
  }
}