Upgrade home-manager release and to nixos-24.05

[jisantuc]

This breaks some things, like --

• lazygit specifically from neovim doesn't think the config file exists anymore (might not be env interpolating, so I might have to tell it explicitly where the config is) (edit: issue was eventually a conflict of files; I was setting up the config file wrong, just needed to use config in programs.lazyvim) ✅
• rest-nvim is missing some dependencies that don't look like they're in lua5xPackages so I might have to build them (e.g. xml2lua, mimetypes) ✅

Error detected while processing /nix/store/nxp86qsz57h69d61syks2dgm00xpwg57-vimplugin-lua5.1-rest.nvim-2.0.1-1-unstable-2024-05-04/plugin/rest-nvim.lua:
[rest.nvim] WARN: Dependency 'lua-curl' was not found. Default HTTP client won't work
[rest.nvim] WARN: Dependency 'mimetypes' was not found. rest.nvim will be completely unable to recognize the file type of external body files
[rest.nvim] WARN: Dependency 'xml2lua' was not found. rest.nvim will be completely unable to use XML bodies in your requests

• who knows what else

[jisantuc]

I didn't encounter too much else, gonna merge the open MR and call this good for now, even though rest-nvim is real mad about loading requests from files right now