efibootmgr: 15 -> 16

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/efibootmgr/versions.

These checks were done:

- built on NixOS
- ran ‘/nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16/bin/efibootdump --help’ got 0 exit code
- ran ‘/nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16/bin/efibootdump help’ got 0 exit code
- ran ‘/nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16/bin/efibootmgr -h’ got 0 exit code
- ran ‘/nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16/bin/efibootmgr --help’ got 0 exit code
- ran ‘/nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16/bin/efibootmgr help’ got 0 exit code
- ran ‘/nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16/bin/efibootmgr -V’ and found version 16
- ran ‘/nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16/bin/efibootmgr --version’ and found version 16
- found 16 with grep in /nix/store/vfs7k6wfqa5xci24ckn8i28qkksw7wam-efibootmgr-16
- directory tree listing: https://gist.github.com/d9d04d34e09782b7b051fbc60d7793aa