khal: 0.9.8 -> 0.9.9 (#41267)
khal: 0.9.8 -> 0.9.9 (#41267)

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

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

These checks were done:

- built on NixOS
- Warning: no invocation of /nix/store/wkssgwwqyffwnf7c8p1zi180xjm256il-khal-0.9.9/bin/.ikhal-wrapped had a zero exit code or showed the expected version
- Warning: no invocation of /nix/store/wkssgwwqyffwnf7c8p1zi180xjm256il-khal-0.9.9/bin/ikhal had a zero exit code or showed the expected version
- Warning: no invocation of /nix/store/wkssgwwqyffwnf7c8p1zi180xjm256il-khal-0.9.9/bin/.khal-wrapped had a zero exit code or showed the expected version
- Warning: no invocation of /nix/store/wkssgwwqyffwnf7c8p1zi180xjm256il-khal-0.9.9/bin/khal had a zero exit code or showed the expected version
- 0 of 4 passed binary check by having a zero exit code.
- 0 of 4 passed binary check by having the new version present in output.
- found 0.9.9 with grep in /nix/store/wkssgwwqyffwnf7c8p1zi180xjm256il-khal-0.9.9
- directory tree listing: https://gist.github.com/a146a88f248f45c280a17c50a0d46b79
- du listing: https://gist.github.com/72d0555178317dce9c07ab814f13f512
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