Merged in task/prod/uon--repo/CST-24688 (pull request DSpace#4077)

[CST-24688] modified en.json5

Approved-by: Daniele Ninfo

Author: Francesca Putignano

src/assets/i18n/en.json5

@@ -2740,7 +2740,7 @@
 
   "error.validation.license.required": "You must grant this license to complete your submission. If you are unable to grant this license at this time you may save your work and return later or remove the submission.",
 
-  "error.validation.pattern": "This input is restricted by the current pattern: {{ pattern }}.",
+  "error.validation.pattern": "Please enter numbers only.",
 
   "error.validation.filerequired": "The file upload is mandatory",