feat: Translate frontend/src/i18n/en.json in sk

91% of minimum 50% translated source file: 'frontend/src/i18n/en.json'
on 'sk'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

frontend/src/i18n/sk.json

@@ -3,7 +3,7 @@
     "cancel": "Zrušiť",
     "clear": "Zrušiť výber",
     "close": "Zavrieť",
-    "continue": "Continue",
+    "continue": "Pokračovať",
     "copy": "Kopírovať",
     "copyFile": "Kopírovať súbor",
     "copyToClipboard": "Kopírovať do schránky",