Update translation files

Updated by "Remove blank strings" hook in Weblate.

Translation: mattermost-languages-shipped/mattermost-server
Translate-URL: https://translate.mattermost.com/projects/mattermost/mattermost-server_master/

i18n/it.json

@@ -7090,9 +7090,5 @@
   {
     "id": "api.admin.ldap.not_available.app_error",
     "translation": "LDAP non è disponibile."
-  },
-  {
-    "id": "api.templates.payment_failed_no_card.title",
-    "translation": ""
   }
 ]

i18n/uk.json

@@ -6862,9 +6862,5 @@
   {
     "id": "api.admin.add_certificate.parseform.app_error",
     "translation": "Помилка синтаксісу багато-форматного запиту"
-  },
-  {
-    "id": "model.config.is_valid.import.retention_days_too_low.app_error",
-    "translation": ""
   }
 ]

i18n/zh-TW.json

@@ -7266,9 +7266,5 @@
   {
     "id": "api.team.add_team_member.invalid_body.app_error",
     "translation": "無法解析要求本文。"
-  },
-  {
-    "id": "api.post.search_files.invalid_body.app_error",
-    "translation": ""
   }
 ]