These are updates that will come through the repo. See the release note that is referenced by phoronix.

Please note that the point release does not constitute a new version of Debian 12 but only updates some of the packages included. There is no need to throw away old “bookworm” media. After installation, packages can be upgraded to the current versions using an up-to-date Debian mirror.

https://www.debian.org/News/2023/20230722

If I’m already running Debian 12, is this something that I have to manually upgrade to or will the security fixes have come in through the repo?