home-assistant: make parse-requirements.py use manifest.json
home-assistant: make parse-requirements.py use manifest.json

The way dependencies and requirements are specified was changed upstream
in https://github.com/home-assistant/home-assistant/pull/22699.

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