List workspace invitations

curl -X GET "https://api.nevia.cloud/v1/workspaces/01d4cnjjq40hnnh0nwmkg35nv2h/invitations" \
  -H "Authorization: Bearer $TOKEN"

{
  "invitations": [
    {
      "id": "01d4cnjn1xy3n9dcwtjnxbxhf15",
      "workspace": "01d4cnjjq40hnnh0nwmkg35nv2h",
      "email": "dana@example.com",
      "role": "editor",
      "state": "pending",
      "invited_by": "01d4cnjmn4fbb1r5btxb5mypv62",
      "created_at": "2026-09-10T12:34:56Z",
      "updated_at": "2026-09-10T12:34:56Z",
      "expires_at": "2026-09-10T12:34:56Z",
      "last_sent_at": "2026-10-10T09:20:00Z",
      "email_sent": true,
      "accepted_by": "string",
      "accepted_at": null
    }
  ],
  "next_cursor": "string",
  "has_more": true
}