home-assistant: 2021.4.2 -> 2021.4.3

[mweinelt]

Motivation for this change

https://github.com/home-assistant/core/releases/tag/2021.4.3

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

    Outdated dependencies     
┏━━━━━━━━━┳━━━━━━━━━┳━━━━━━━━┓
┃ Package ┃ Current ┃ Wanted ┃
┡━━━━━━━━━╇━━━━━━━━━╇━━━━━━━━┩
│ numpy   │ 1.20.1  │ 1.20.2 │
└─────────┴─────────┴────────┘

(which is already in staging)

[veprbl]

@GrahamcOfBorg eval

[fabaff]

Result of nixpkgs-review pr 119004 run on x86_64-linux 1

5 packages built:

• home-assistant
• python38Packages.devolo-home-control-api
• python38Packages.python-smarttub
• python39Packages.devolo-home-control-api
• python39Packages.python-smarttub

[fabaff]

Change looks good to me.