chore(deps): update nixpkgs to nixos-23.05

This PR contains the following updates:

Package	Update	Change
nixpkgs	major	`nixos-22.11` -> `nixos-23.05`

Release Notes

NixOS/nixpkgs

### [`vnixos-23.05`](https://togithub.com/NixOS/nixpkgs/compare/nixos-22.11...nixos-23.05) [Compare Source](https://togithub.com/NixOS/nixpkgs/compare/nixos-22.11...nixos-23.05)

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

[ ] If you want to rebase/retry this PR, check this box

This PR has been generated by Mend Renovate. View repository job log here.

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

any of the package files in this branch needs updating, or
the branch becomes conflicted, or
you click the rebase/retry checkbox if found above, or
you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: flake.lock

Command failed: docker run --rm --name=renovate_sidecar --label=renovate_child -v "/mnt/renovate/gh/timhae/firefly":"/mnt/renovate/gh/timhae/firefly" -v "/tmp/renovate-cache":"/tmp/renovate-cache" -v "/tmp/containerbase":"/tmp/containerbase" -e BUILDPACK_CACHE_DIR -e CONTAINERBASE_CACHE_DIR -w "/mnt/renovate/gh/timhae/firefly" ghcr.io/containerbase/sidecar bash -l -c "install-tool nix 2.15.0 && nix     --extra-experimental-features nix-command     --extra-experimental-features flakes --extra-access-tokens github.com=**redacted** flake lock --update-input nixpkgs"
warning: '/nix/var/nix' does not exist, so Nix will use '/home/ubuntu/.local/share/nix/root' as a chroot store
warning: Git tree '/mnt/renovate/gh/timhae/firefly' is dirty
error:
       … while updating the lock file of flake 'git+file:///mnt/renovate/gh/timhae/firefly'

       … while updating the flake input 'nixpkgs'

       … while fetching the input 'github:NixOS/nixpkgs/nixos-23.05'

       error: unable to download 'https://api.github.com/repos/NixOS/nixpkgs/commits/nixos-23.05': HTTP error 401

       response body:

       {
         "message": "Bad credentials",
         "documentation_url": "https://docs.github.com/rest"
       }

timhae / firefly