fix: rule unique for apk upload

app/Models/ApkUpdate.php

@@ -16,6 +16,7 @@ use Illuminate\Http\File;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Storage;
+use Illuminate\Validation\Rule;
 
 class ApkUpdate extends Model {
     use HasFactory;
@@ -47,7 +48,7 @@ class ApkUpdate extends Model {
             'id' => 'nullable|integer|exists:App\Models\ApkUpdate,id',
             'name' => 'required|string',
             'file' => 'required_without:id|file|' . FileHelper::convertToStrLaraValidation(FileHelper::$allowedApkExtensions),
-            'version_code' => 'required|integer|min:1|unique:apk_updates,version_code',
+            'version_code' => ['required', 'integer', 'min:1', Rule::unique('apk_updates', 'version_code')->ignore($request->id)],
             'version_name' => 'required|string',
             'change_note' => 'nullable|string'
         ], [