feat(i18n): update eu-ES.json (#3170)

Author: xabirequejo

locales/eu-ES.json

@@ -639,7 +639,8 @@
     "poll": {
       "count": "{0} boto|boto {0}|{0} boto",
       "ends": "epemuga: {0}",
-      "finished": "amaiera: {0}"
+      "finished": "amaiera: {0}",
+      "update": "Freskatu"
     },
     "replying_to": "{0}(r)i erantzunez",
     "show_full_thread": "Erakutsi hari osoa",