fix: correctly apply due dates for contract and invoice upload reminders

src/Twig/AppRuntime.php

@@ -8,7 +8,7 @@ use App\Entity\Teamer;
 use App\Entity\Upload;
 use App\Service\Teamer\PickupResolver;
 use App\Service\Upload\UploadHandler;
-use Carbon\Carbon;
+use Carbon\CarbonImmutable;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Contracts\Translation\TranslatorInterface;
 use Twig\Environment;
@@ -222,13 +222,13 @@ class AppRuntime implements RuntimeExtensionInterface
 
     public function dateDiffForHumans(\DateTimeInterface $dateTime, ?\DateTimeInterface $other = null): string
     {
-        $oldLocale = Carbon::getLocale();
+        $oldLocale = CarbonImmutable::getLocale();
         $locale = $this->requestStack->getMainRequest()->getLocale();
-        Carbon::setLocale($locale);
+        CarbonImmutable::setLocale($locale);
 
-        $result = Carbon::instance($dateTime)->diffForHumans($other);
+        $result = CarbonImmutable::instance($dateTime)->diffForHumans($other);
 
-        Carbon::setLocale($oldLocale);
+        CarbonImmutable::setLocale($oldLocale);
 
         return $result;
     }