Update Hacktoberfest 2025 event details: replace ICS file with a zipped version

Signed-off-by: Lee Calcote <lee.calcote@layer5.io>

Author: leecalcote

src/collections/events/2025/hacktoberfest-2025/hacktoberfest-2025-kickoff-designing-with-meshery.ics.zip

@@ -17,7 +17,7 @@ import hacktoberfestBadge from "./layer5-hacktoberfest25-badge.png";
 import hacktoberfestFirstPR from "./hacktoberfest-layer5-first-pr.webp";
 import hacktoberfestOpenArms from "./hacktoberfest-layer5-open-arms.webp";
 import hacktoberfestTheme from "./hacktoberfest-meshery-theme.webp";
-import calenderICS from "../../../../../static/mail/2025/hacktoberfest/hacktoberfest-2025-kickoff-designing-with-meshery.ics";
+import calenderICS from "./hacktoberfest-2025-kickoff-designing-with-meshery.ics.zip";
 
 <p>
 <Link to="/programs/hacktoberfest">Hacktoberfest</Link> is just around the corner, and it’s an exciting opportunity to get involved in Layer5 projects. You might be surprised to learn how even small contributions can make a meaningful impact on a project. As projects grow, issues can easily go unnoticed, and your efforts in resolving them can truly make a difference while also helping you grow as a contributor.