librealsense: 2.11.0 -> 2.11.1

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

This update was made based on information from https://repology.org/metapackage/librealsense/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 2.11.1 with grep in /nix/store/qyy6s8nbpifg33h0hvnpf3fizwdycpvz-librealsense-2.11.1
- directory tree listing: https://gist.github.com/020e7e6cfc0e9cc89911d68349e47bc7
- du listing: https://gist.github.com/dfc212b0151822573970980eb31f8289