update gsoc 2025 file (#862)

Author: Honyii

programs/mentoring/gsoc/gsoc-2025.md

@@ -5,9 +5,23 @@
 
 We are thrilled to announce that JSON Schema will be applying as a mentoring organization for the 2025 Google Summer of Code (GSoC). If accepted, we look forward to collaborating with talented contributors from around the world to advance the field of JSON Schema and open-source technology.
 
-## Stay Tuned for Timeline and Project Ideas
-
-The official GSoC 2025 timeline and our project ideas will be announced soon! Be sure to check back for updates, and prepare to explore exciting opportunities to contribute to meaningful, real-world projects.
+## Timeline and Project Ideas
+
+The official GSoC 2025 timeline is now live, and our project ideas are on the way! Stay tuned for updates and get ready to explore exciting opportunities to contribute to meaningful, real-world projects.
+
+[Full timeline](https://developers.google.com/open-source/gsoc/timeline)
+
+|Important dates | Deadline|
+| ----- | ----- |
+| Organization Applications Open | January 27, 2025|
+| Organization Application Deadline | February 11, 2025 |
+| Organizations Announced | February 27, 2025 |
+| Potential GSoC contributors discuss application ideas with mentoring organizations | February 27 - March 24, 2025 |
+| GSoC contributor application period | March 24 - April 8, 2025 |
+| Accepted GSoC Contributor projects announced | May 8, 2025 |
+| Contributors work on their Google Summer of Code projects | June 2, 2025 - August 25, 2025|
+| Mentors submit final GSoC contributor evaluations (standard coding period) | September 1, 2025 - September 8, 2025|
+| Initial results of Google Summer of Code 2024 announced | September 3, 2025 |
 
 ## Why Choose a JSON Schema Project?