mate.mate-session-manager: 1.20.0 -> 1.20.1 (#42481)

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

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

These checks were done:

- built on NixOS
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/mate-session passed the binary check.
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/mate-session-properties passed the binary check.
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/mate-session-save passed the binary check.
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/mate-session-inhibit passed the binary check.
- Warning: no invocation of /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/mate-wm had a zero exit code or showed the expected version
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/.mate-session-wrapped passed the binary check.
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/.mate-session-properties-wrapped passed the binary check.
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/.mate-session-save-wrapped passed the binary check.
- /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/.mate-session-inhibit-wrapped passed the binary check.
- Warning: no invocation of /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1/bin/.mate-wm-wrapped had a zero exit code or showed the expected version
- 8 of 10 passed binary check by having a zero exit code.
- 1 of 10 passed binary check by having the new version present in output.
- found 1.20.1 with grep in /nix/store/wbgh5848w72f7cvsh7ks2vj7f9i0ylnz-mate-session-manager-1.20.1
- directory tree listing: https://gist.github.com/f036604f75bea4aed0093a9ca8eb6f0a
- du listing: https://gist.github.com/1083d12fd4033f9091a0ce334f09c1e4