knot-resolver: 2.1.1 -> 2.2.0

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

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

These checks were done:

- built on NixOS
- ran `/nix/store/2fpr2hzspmrnnvmawxd3mv28774rysma-knot-resolver-2.2.0/bin/kresd -h` got 0 exit code
- ran `/nix/store/2fpr2hzspmrnnvmawxd3mv28774rysma-knot-resolver-2.2.0/bin/kresd --help` got 0 exit code
- ran `/nix/store/2fpr2hzspmrnnvmawxd3mv28774rysma-knot-resolver-2.2.0/bin/kresd -V` and found version 2.2.0
- ran `/nix/store/2fpr2hzspmrnnvmawxd3mv28774rysma-knot-resolver-2.2.0/bin/kresd --version` and found version 2.2.0
- ran `/nix/store/2fpr2hzspmrnnvmawxd3mv28774rysma-knot-resolver-2.2.0/bin/kresd -h` and found version 2.2.0
- ran `/nix/store/2fpr2hzspmrnnvmawxd3mv28774rysma-knot-resolver-2.2.0/bin/kresd --help` and found version 2.2.0
- found 2.2.0 with grep in /nix/store/2fpr2hzspmrnnvmawxd3mv28774rysma-knot-resolver-2.2.0
- directory tree listing: https://gist.github.com/3b59aaaf9f7d90b8de351b6eb712e2a5