Merge branch 'main' into auto/conference-updates

Author: JesperDramsch

_data/conferences.yml

@@ -85,7 +85,8 @@
   year: 2026
   link: https://istanbul.python.pizza/
   cfp_link: https://istanbul.python.pizza/cfp/
-  cfp: '2026-09-07 23:59:00'
+  cfp: '2026-08-25 23:59:00'
+  cfp_ext: '2026-09-07 23:59:00'
   place: Istanbul, Turkey
   start: 2026-11-14
   end: 2026-11-14