alsaLib: 1.1.5 -> 1.1.6

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/37xgjr2ij3mvfrncywd23q2csnpbc1id-alsa-lib-1.1.6/bin/aserver -h’ got 0 exit code
- ran ‘/nix/store/37xgjr2ij3mvfrncywd23q2csnpbc1id-alsa-lib-1.1.6/bin/aserver --help’ got 0 exit code
- found 1.1.6 with grep in /nix/store/37xgjr2ij3mvfrncywd23q2csnpbc1id-alsa-lib-1.1.6
- directory tree listing: https://gist.github.com/9d2e30dc8cb0e3b643b48b4ddbe3a418