nixos/doc/rl-2505: removal of zig_0_9 and zig_0_10

Author: niklaskorz

nixos/doc/manual/release-notes/rl-2505.section.md

@@ -237,6 +237,8 @@
 
 - `pnpm` was updated to version 10. If your project is incompatible, you can install the previous version from the package attribute `pnpm_9`.
 
+- `zig_0_9` and `zig_0_10` have been removed, you should upgrade to `zig_0_13` (also available as just `zig`), `zig_0_12` or `zig_0_11` instead.
+
 - `programs.less.lessopen` is now null by default. To restore the previous behaviour, set it to `''|${lib.getExe' pkgs.lesspipe "lesspipe.sh"} %s''`.
 
 - `hardware.pulseaudio` has been renamed to `services.pulseaudio`.  The deprecated option names will continue to work, but causes a warning.