Add Planning Committee

This PR recognizes those working on Summit by adding a section at the bottom of the page for all the contributors.

Author: ElizabethN

content/en/events/isc-2025.md

@@ -118,3 +118,47 @@ We prioritize fair pricing structures designed to maximize your return on invest
 By sponsoring, you'll be supporting and connecting with the community that's been driving InnerSource adoption and best practices for the past decade.
 For more information about sponsorship opportunities, contact Addie Girouard, Director of Sponsorship at [Addie@InnerSourceCommons.org](mailto:Addie@InnerSourceCommons.org)
 
+---
+
+## Summit Planning Committee
+
+#### Summit Planning Leadership
+
+|    Summit Planning Leadership   |
+|-----------------------------------------|----------------------------------------------|
+| <img src="https://github.com/InnerSourceCommons/innersourcecommons.org/blob/master/static/images/events/contributors/Olive_Cannonjpeg" alt="Olive Cannon" width="80"/> | Olive Cannon - Events Coordinator and Lead Organizer for ISC Summit 2025 |
+| <img src="https://github.com/InnerSourceCommons/innersourcecommons.org/blob/master/static/images/events/contributors/Guilherme_Dellagustin.jpeg" alt="Guilherme Dellagustin" width="80"/> | Guilherme Dellagustin - Lead Organizer, Berlin |
+|                                         | Jenna Ritten - Lead Organizer, New York      |
+| <img src="https://github.com/InnerSourceCommons/innersourcecommons.org/blob/master/static/images/events/contributors/Tsubasa_Masui.jpeg" alt="Tsubasa Masui" width="80"/> | Tsubasa Masui - Lead Organizer, Yokohama      |
+| <img src="https://github.com/InnerSourceCommons/innersourcecommons.org/blob/master/static/images/about/Addie_Girouard.jpg" alt="Addie Girouard" width="80"/> | Addie Girouard - Director of Sponsorships     |
+| <img src="https://github.com/InnerSourceCommons/innersourcecommons.org/blob/master/static/images/about/Russell_Rutledge.jpg" alt="Russ Rutledge" width="80"/> | Russ Rutledge - Executive Director, ISC       |
+
+#### Special Thanks to These Contributors:
+
+- Elizabeth Barron
+- Paul Berschick
+- Matt Cobby
+- Fernando Correa
+- Clare Dillon
+- Isabel Drost-Fromm
+- Feyijimi Erinle
+- Wolfgang Gehring
+- Georg Grütter
+- Yuki Hattori
+- Barak Imam
+- Daniel Izquierdo
+- Ana Jimenez
+- Yoshitake Kobayashi
+- Niall Maher
+- John Mark
+- Ivan Lopez Morillo
+- Aisha Muibudeen
+- Regina Nkenchor
+- Shingo Oidate
+- Maryblessing Okolie
+- Omotola Omotayo
+- Ijeoma Onwuka
+- Tom Sadler
+- Katie Schueths
+- Sebastian Spier
+- Diego Torres