feat(form-labels): Adds new form labels for dc_publisher e dc_relation_issn

ref: DURACOM-481

Author: AdamF42

src/assets/i18n/en.json5

@@ -5272,6 +5272,10 @@
 
   "statistics.table.header.views": "Views",
 
+  "form.other-information.dc_publisher": "Publisher",
+
+  "form.other-information.dc_relation_issn": "ISSN",
+
   "statistics.table.no-name": "(object name could not be loaded)",
 
   "submission.edit.breadcrumbs": "Edit Submission",