fix(api): hide nested server secrets from read tokens

Require read:sensitive for nested server logdrain and sentinel fields in
application and database API responses.

Limit deployment configuration column migration SQL to PostgreSQL.

app/Models/CloudProviderToken.php

@@ -2,8 +2,12 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
 class CloudProviderToken extends BaseModel
 {
+    use HasFactory;
+
     protected $fillable = [
         'team_id',
         'provider',