DSC-1709 provided label for cclicense required error

Author: Mattia Vianelli

src/assets/i18n/en.json5

@@ -2123,6 +2123,8 @@
 
   "error.top-level-communities": "Error fetching top-level communities",
 
+  "error.validation.cclicense.required": "You must grant this cclicense to complete your submission. If you are unable to grant the cclicense at this time, you may save your work and return later or remove the submission.",
+
   "error.validation.custom-url.conflict": "The custom url has been already used, please try with a new one.",
 
   "error.validation.custom-url.empty": "The custom url is required and cannot be empty.",