Motivation for this change

Keybase has shipped many bugfixes and an essential features (blocking other people) since this is a security focused tool backporting this version upgrades from nixpkgs/master would be desirable.

Bufixes of features available on 5.0.0 from upstream:

5.1.0:

• Various bug fixes around team management
• Dark mode fixes
• Smaller bug fixes and performance improvements

5.1.1:

• This is a bugfix release.
• Enabled blocking users from their profile

5.2.0:

• Various bug fixes and performance improvements.

5.2.1:

• This is a bugfix release.

5.3.0:

• Many performance improvements and bug fixes

5.3.1:

• This is a bugfix release.

5.4.0:
n/a (only feature additions and fixes of feature additions after 5.0.0)

5.4.1:

• Fix KBFS performance issues

5.4.2:

• This is a bugfix release for KBFS performance.

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.