Update headers

Author: clytaemnestra

src/components/header/header-actions.astro

@@ -21,8 +21,8 @@ const IS_LIVE = false;
           </abbr>
           <span class="hidden md:inline">Code of Conduct</span>
         </ButtonLink>
-        <ButtonLink url="https://voting.europython.eu" className="hidden md:block">
-          <span>Community vote</span>
+        <ButtonLink url="https://ep2025.europython.eu/tickets" className="hidden md:block">
+          <span>Tickets</span>
         </ButtonLink>
         {IS_LIVE && (
           <ButtonLink url="/live">