[BOS-2026] Lightning talks to replace speaker - #16181

Changed pages include:

• index.html - view
• 404.html - view
• about/index.html - view
• blog/index.html - view
• conduct/index.html - view
• devops-gives-back/index.html - view
• events/index.html - view
• ignite-talks-format/index.html - view
• open-space-format/index.html - view
• organizing/index.html - view

There are more changes not included in the list