jackett: 0.8.929 -> 0.8.953

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/n7k1adzjashxif5k4m84ywij7bh2ck14-jackett-0.8.953/bin/Jackett -h’ got 0 exit code
- ran ‘/nix/store/n7k1adzjashxif5k4m84ywij7bh2ck14-jackett-0.8.953/bin/Jackett help’ got 0 exit code
- found 0.8.953 with grep in /nix/store/n7k1adzjashxif5k4m84ywij7bh2ck14-jackett-0.8.953
- directory tree listing: https://gist.github.com/32e346c875f3b936a083c815724f8a9f