feat(i18n): update Greek translations

Currently translated at 0.3% (1 of 277 strings)

Co-authored-by: Marc Van Der Velden <[email protected]>
Translate-URL: https://hosted.weblate.org/projects/discord-tickets/bot/el/
Translation: Discord Tickets/Bot

Author: marciscool1h

src/i18n/el.yml

@@ -1 +1,3 @@
-{}
+buttons:
+  accept_close_request:
+    emoji: ✅