picard-tools: 2.18.4 -> 2.18.5

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

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

These checks were done:

- built on NixOS
- Warning: no invocation of /nix/store/y7q0bsph0zldfjkz4ci3f41ba5va810w-picard-tools-2.18.5/bin/picard had a zero exit code or showed the expected version
- 0 of 1 passed binary check by having a zero exit code.
- 0 of 1 passed binary check by having the new version present in output.
- found 2.18.5 with grep in /nix/store/y7q0bsph0zldfjkz4ci3f41ba5va810w-picard-tools-2.18.5
- directory tree listing: https://gist.github.com/1938ad634fa882d94e8d28fd1625547c
- du listing: https://gist.github.com/4b51e89646327900f6ef6f2242f5d0bd