obs-linuxbrowser: 0.3.1 -> 0.4.0 (#41978)

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

This update was made based on information from https://repology.org/metapackage/obs-linuxbrowser/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.
- directory tree listing: https://gist.github.com/d0ce1376180ae841789e118c1fd370a7
- du listing: https://gist.github.com/ee99a853a8b3bef5c469482ca3a3ec4c