lyx: 2.2.3 -> 2.3.0

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

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

These checks were done:

- built on NixOS
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/lyxclient -h` got 0 exit code
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/tex2lyx -h` got 0 exit code
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/tex2lyx --help` got 0 exit code
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/tex2lyx -v` and found version 2.3.0
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/tex2lyx --version` and found version 2.3.0
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/tex2lyx -h` and found version 2.3.0
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/tex2lyx --help` and found version 2.3.0
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/.lyx-wrapped --help` got 0 exit code
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/.lyx-wrapped --version` and found version 2.3.0
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/lyx --help` got 0 exit code
- ran `/nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0/bin/lyx --version` and found version 2.3.0
- found 2.3.0 with grep in /nix/store/p9561m3hhl936qh6wc3zhaypz9axywar-lyx-2.3.0
- directory tree listing: https://gist.github.com/446d7f60ddce2b781c23ff41a2d673d1