Metadata correction for 2024.propor-1.2

### JSON data block

```json
{
"anthology_id": "2024.propor-1.2",
"authors": [
{
"first": "Gladson",
"last": "Araújo",
"id": "gladson-de-araujo/unverified"
},
{
"first": "Tiago de",
"last": "Melo",
"id": "tiago-de-melo/unverified"
},
{
"first": "Carlos",
"last": "Maurício",
"id": "carlos-mauricio-s-figueiredo/unverified"
}
],
"authors_old": "Gladson de Araujo | Tiago de Melo | Carlos Maurício S. Figueiredo",
"authors_new": "Gladson Araújo | Tiago de Melo | Carlos Maurício"
}
```

The issue gives an exact payload with anthology_id and the old/new author strings. Start by locating the metadata entry for `2024.propor-1.2` and compare its authors with the provided JSON block. Update the author name fields to the corrected values and keep the `id` values as `.../unverified` unless project rules require otherwise. The task is done when that single record matches the `authors_new` values and no unrelated fields change.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.