archivemount: 0.8.7 -> 0.8.9

Semi-automatic update generated by https://github.com/ryantm/nix-update tools. These checks were done:

- built on NixOS
- ran `/nix/store/sn92kb7bgpg6arj6jfgg7yv78ap2fkll-archivemount-0.8.9/bin/archivemount -V` and found version 0.8.9
- ran `/nix/store/sn92kb7bgpg6arj6jfgg7yv78ap2fkll-archivemount-0.8.9/bin/archivemount --version` and found version 0.8.9
- found 0.8.9 with grep in /nix/store/sn92kb7bgpg6arj6jfgg7yv78ap2fkll-archivemount-0.8.9