fix(blog): use the actual Saqlain/Junaid/Kamran acceptance poster as the GSoC cover

The cover and the first inline image in the GSoC blog were pointing at
/images/gsoc.jpg, which is a Tech Grind workspace photo, not the open-source
acceptance poster. The intended image (Muhammad Saqlain, Junaid Shaukat,
Kamran ul Haq with the "Dev Weekends X Open Source Acceptance 2026" lockup)
is at /images/gsoc1.jpg. Update the frontmatter and the inline reference.

Also pin imageFit: "contain" in frontmatter so the portrait poster renders
without cropping the headshots, decoupled from the slug-based fallback.

Author: ZeeshanAdilButt

content/blog/gsoc.md

@@ -4,7 +4,8 @@ date: "2026-05-06"
 category: "news"
 featured: true
 order: 1
-image: "/images/gsoc.jpg"
+image: "/images/gsoc1.jpg"
+imageFit: "contain"
 description: "The acceptance emails came in over a few weeks. Apache Beam, NumFOCUS, EMBL-EBI, FLARE, BRL-CAD, FOSSASIA, and a handful of others. Here are the people behind them and the quiet road that led there."
 ---
 
@@ -36,7 +37,7 @@ What separated the 14 people below from 100 others who started at the same place
 
 ## Google Summer of Code 2026 (9 selections)
 
-![Muhammad Saqlain, Junaid Shaukat, and Kamran ul Haq, GSoC 2026](/images/gsoc.jpg)
+![Muhammad Saqlain, Junaid Shaukat, and Kamran ul Haq, GSoC 2026](/images/gsoc1.jpg)
 
 *Pictured above: Muhammad Saqlain (NumFOCUS), Muhammad Junaid Shaukat (Apache Software Foundation, Apache Beam), and Kamran ul Haq (FLARE).*