How did I fix «Err:3 http://repo.mysql.com/apt/debian buster InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B7B3B788A8D3785C» on Debian 12?

Unix Debian
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1 
Err:3 http://repo.mysql.com/apt/debian buster InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B7B3B788A8D3785C
2 
gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys B7B3B788A8D3785C
rm /usr/share/keyrings/mysql-apt-config.gpg
gpg  --output /usr/share/keyrings/mysql-apt-config.gpg --export B7B3B788A8D3785C

reddit.com/r/mysql/comments/18jj4hm/comment/kf4dhlr