rl-2505: remove note about OpenSSH memlocking

  - Applications linked against different Mesa versions than installed on the system should now work correctly going forward (however, applications against older Mesa, e.g. from Nixpkgs releases before 25.05, remain broken)

  - Packages that used to depend on Mesa for libgbm or libdri should use `libgbm` or `dri-pkgconfig-stub` as inputs, respectively

- OpenSSH has been updated from 9.9p2 to 10.0p2, dropping support for DSA keys and adding a new `ssh-auth` binary to handle user authentication in a different address space from unauthenticated sessions. Additionally, we now enable a configure option by default that attempts to lock sshd into RAM to prevent it from being swapped out, which may improve performance if the system is under memory pressure. See the [full changelog](https://www.openwall.com/lists/oss-security/2025/04/09/1) for more details.

- OpenSSH has been updated from 9.9p2 to 10.0p2, dropping support for DSA keys and adding a new `ssh-auth` binary to handle user authentication in a different address space from unauthenticated sessions. See the [full changelog](https://www.openwall.com/lists/oss-security/2025/04/09/1) for more details.

- Emacs has been updated to 30.1.

  This introduces some backwards‐incompatible changes; see the NEWS for details.