This has been marked insecure a while ago, as some CVEs have not been
backported. Even if *some* CVEs are fixed, we'd need **all** of them to
be, to get it back into the cache.
Not having it in the cache means, we can not test it in CI. This means
we can't make sure to actually support this version to evaluate Nixpkgs.
The first version that supports zstd compression, to create the option
to eventually switch compression for the binary cache.
It was released one year ago on 2023-11-03 and first shipped in NixOS
23.11.
`ruby` attribute requires features from 1.11
```
$ nix-build -A ruby
error: cannot coerce a set to a string, at pkgs/development/interpreters/ruby/default.nix:57:17
```
