wavemon: 0.8.1 -> 0.8.2

Semi-automatic update. These checks were performed:

- built on NixOS
- ran `/nix/store/kzknr8h49w4xv1qam0049r4ygd65vkab-wavemon-0.8.2/bin/wavemon -h` got 0 exit code
- ran `/nix/store/kzknr8h49w4xv1qam0049r4ygd65vkab-wavemon-0.8.2/bin/wavemon -v` and found version 0.8.2
- found 0.8.2 with grep in /nix/store/kzknr8h49w4xv1qam0049r4ygd65vkab-wavemon-0.8.2
- found 0.8.2 in filename of file in /nix/store/kzknr8h49w4xv1qam0049r4ygd65vkab-wavemon-0.8.2

cc "@raskin @fpletz"