Use package_infos to obtain the url

Contributes to CURA-8587

plugins/Marketplace/PackageList.py

@@ -289,5 +289,5 @@ class PackageList(ListModel):
         :param package_id: the package identification string
         """
         self._manager.removePackage(package_id, force_add = True)
-        url = self._manager.packagesWithUpdate[package_id]["download_url"]
+        url = self._manager.package_infosWithUpdate[package_id]["download_url"]
         self.download(package_id, url, True)