python3Packages.black: disable another test on aarch64-linux
python3Packages.black: disable another test on aarch64-linux

Basically the same as commit 3fcf9f18ddf.
https://hydra.nixos.org/build/179644263

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs