paml: 4.9g -> 4.9h

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/39cfy96430yznv6h3cg7zd8850i6kdl1-paml-4.9h/bin/chi2 -h’ got 0 exit code
- ran ‘/nix/store/39cfy96430yznv6h3cg7zd8850i6kdl1-paml-4.9h/bin/chi2 --help’ got 0 exit code
- ran ‘/nix/store/39cfy96430yznv6h3cg7zd8850i6kdl1-paml-4.9h/bin/chi2 help’ got 0 exit code
- found 4.9h with grep in /nix/store/39cfy96430yznv6h3cg7zd8850i6kdl1-paml-4.9h
- directory tree listing: https://gist.github.com/b2a37e7cd2b4b41178f0698f3aac69e2