I apologize for the stupid question. I have always used bitcoin.org to download new versions. I am currently using version 22.00 downloaded from bitcoin.org

And now I find out about version 24.0 on bitcoincore.org
x what should I do. be updated? Do I need to recreate wallet.dat and transfer bitcoins? Or can you use the old one? 
I'm very concerned about the security of my bitcoins right now. 

Sorry for stupid question.