grantlee: 0.4.0 -> 0.5.1 (#42012)

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/grantlee/versions.

These checks were done:

- built on NixOS

- 0 of 0 passed binary check by having a zero exit code.
- 0 of 0 passed binary check by having the new version present in output.
- found 0.5.1 with grep in /nix/store/6g40ly4agw1h9kvb3cl6yf0g3swi95fc-grantlee-0.5.1
- directory tree listing: https://gist.github.com/e74be5a3f1cab3f4f9f9a56612731410
- du listing: https://gist.github.com/6e697a1e258b3e9e42c164a437f319f2