python3Packages.msgspec: fix src hash (#416464)

    owner = "jcrist";

    repo = "msgspec";

    tag = version;

    hash = "sha256-g2yhw9fMucBHlGx9kAMQL87znXlQT9KbxQ/QcmUetqI=";

    # Note that this hash changes after some time after release because they

    # use `$Format:%d$` in msgspec/_version.py, and GitHub produces different

    # tarballs depending on whether tagged commit is the last commit, see

    # https://github.com/NixOS/nixpkgs/issues/84312

    hash = "sha256-CajdPNAkssriY/sie5gR+4k31b3Wd7WzqcsFmrlSoPY=";

  };

  build-system = [ setuptools ];