release-common: Fix busybox builtins (busybox >= 1.27)
release-common: Fix busybox builtins (busybox >= 1.27)

See https://github.com/NixOS/nixpkgs/pull/28261

peti/nix,pikajude/nix,shlevy/nix,layus/nix,ehmry/nix,layus/nix,dezgeg/nix,ehmry/nix,vcunat/nix,pikajude/nix,dezgeg/nix,zimbatm/nix,shlevy/nix,shlevy/nix,zimbatm/nix,pikajude/nix,NixOS/nix,ehmry/nix,zimbatm/nix,rycee/nix,ehmry/nix,layus/nix,dezgeg/nix,rycee/nix,vcunat/nix,peti/nix,layus/nix,dtzWill/nix,peti/nix,rycee/nix,NixOS/nix,peti/nix,NixOS/nix,dtzWill/nix,vcunat/nix,rycee/nix,dtzWill/nix,NixOS/nix,shlevy/nix,dezgeg/nix,dtzWill/nix,peti/nix,zimbatm/nix,NixOS/nix,dtzWill/nix,dezgeg/nix,ehmry/nix,ehmry/nix,vcunat/nix,layus/nix,shlevy/nix,rycee/nix