Gatsby 5.16.1, node 24, deps updates and cleanups - #1992

Changed pages include:

• index.html - view
• 404.html - view
• about.html - view
• challenges.html - view
• components.html - view
• faq.html - view
• guides.html - view
• routes.html - view
• showcase.html - view
• tracks.html - view

There are more changes not included in the list