mate.mate-power-manager: 1.20.0 -> 1.20.1

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

This update was made based on information from https://repology.org/metapackage/mate-power-manager/versions.

These checks were done:

- built on NixOS
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-manager -h` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-manager --help` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-manager --version` and found version 1.20.1
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-preferences -h` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-preferences --help` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-statistics -h` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-statistics --help` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/.mate-power-manager-wrapped -h` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/.mate-power-manager-wrapped --help` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/.mate-power-manager-wrapped --version` and found version 1.20.1
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/.mate-power-preferences-wrapped -h` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/.mate-power-preferences-wrapped --help` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/.mate-power-statistics-wrapped -h` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/.mate-power-statistics-wrapped --help` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-backlight-helper -h` got 0 exit code
- ran `/nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1/bin/mate-power-backlight-helper --help` got 0 exit code
- found 1.20.1 with grep in /nix/store/0qj1rkdjfc3yazdk2xa46147sg5rhzd4-mate-power-manager-1.20.1
- directory tree listing: https://gist.github.com/a6a1ffa6917fe4c0aa8b463061551af2