asymptote: 2.42 -> 2.44

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/cxi50l6jrwac932swm8pfd2zb1pm9g4b-asymptote-2.44/bin/asy -h’ got 0 exit code
- ran ‘/nix/store/cxi50l6jrwac932swm8pfd2zb1pm9g4b-asymptote-2.44/bin/asy --help’ got 0 exit code
- found 2.44 with grep in /nix/store/cxi50l6jrwac932swm8pfd2zb1pm9g4b-asymptote-2.44
- directory tree listing: https://gist.github.com/f39c5dba52ed8849c1eb79ba04db4f1d