Remove deprecated method

Fix the follow error:

```
Message: Call to undefined method OC_App::getNavigation() in file '/var/www/html/apps-extra/side_menu/lib/Service/AppRepository.php' line 54
```

Reference: https://github.com/nextcloud/server/commit/167763d3125779fc642f7b169389dea029bb73ed

Signed-off-by: Vitor Mattos <vitor@php.rio>

lib/Service/AppRepository.php

@@ -3,6 +3,7 @@
 namespace OCA\SideMenu\Service;
 
 use OC\User\User;
+use OCP\INavigationManager;
 use OCP\L10N\IFactory;
 
 /**
@@ -34,6 +35,7 @@ class AppRepository
 
     public function __construct(
         \OC_App $ocApp,
+        protected INavigationManager $navigationManager,
         IFactory $l10nFactory,
         ConfigProxy $config,
         CategoryRepository $categoryRepository
@@ -51,7 +53,7 @@ class AppRepository
      */
     public function getVisibleApps()
     {
-        $navigation = $this->ocApp->getNavigation();
+        $navigation = $this->navigationManager->getAll();
         $appCategoriesCustom = $this->config->getAppValueArray('apps-categories-custom', '[]');
         $categories = $this->categoryRepository->getOrderedCategories();
         $apps = $this->ocApp->listAllApps();