gsoc: Add remaining milestone dates to GSoC 2026 Key Dates section (#4321)

Signed-off-by: alikhere <alikhurshid.dev@gmail.com>

Author: alikhere

content/en/events/upcoming-events/gsoc-2026.md

@@ -43,13 +43,12 @@ Here are the key dates for GSoC 2026, the [full timeline](https://developers.goo
 | **Applications Open**            | March 16 @ 18:00 UTC |
 | **Applications Deadline**        | March 31 @ 18:00 UTC |
 | **Accepted Proposals Announced** | April 30             |
-<!--
-| **Community Bonding**            | May 8 - June 1       |
-| **Coding Begins**                | June 2               |
-| **Midterm Evaluations**          | July 14 - 18         |
-| **Coding Ends**                  | September 1          |
-| **Final Evaluations**            | September 1 - 8      |
--->
+| **Community Bonding**            | May 1 - 24           |
+| **Coding Begins**                | May 25               |
+| **Midterm Evaluations**          | July 6 - 10          |
+| **Coding Ends**                  | August 24            |
+| **Final Evaluations**            | August 24 - 31       |
+
 </div>
 </div>