🗑️ Refactor Meetup model by removing unused $fillable fields and updating dependencies in composer.lock

- Removed unnecessary `city_id` and `created_by` attributes from `Meetup` model.
- Updated multiple dependencies in `composer.lock`, including `guzzlehttp/guzzle`, `laravel/framework`, and other libraries to the latest versions.
- Verified all updates maintain compatibility with existing functionality.

app/Models/Meetup.php

@@ -26,13 +26,11 @@ class Meetup extends Model implements HasMedia
     /** @var list<string> */
     protected $fillable = [
         'name',
-        'city_id',
         'description',
         'website',
         'nostr_pubkey',
         'github_data',
         'simplified_geojson',
-        'created_by',
     ];
 
     /**