insomnia: 5.16.0 -> 5.16.1

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

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

These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 5.16.1 with grep in /nix/store/ipbmvgywl4835c6ryl95nigfz2cvmkd7-insomnia-5.16.1
- directory tree listing: https://gist.github.com/97908578657058f7b3c2b72b2988dcd4



Closes #39890

Co-authored-by: Robin Gloster <mail@glob.in>