feat: add the conferences after August 2023

[FrancescoXX]

What feature?

update this section

https://contentbox.vercel.app/docs/conferences

add the conferences after august 2023

Add screenshots

No response

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• [X] I have checked the existing issues
• [ ] I want to work on this issue

[Koushik1311]

Hi @FrancescoXX I would like to do this but where can I find the content?