libowfat: 0.31 -> 0.32 (#48414)

* libowfat: 0.31 -> 0.32

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/libowfat/versions

* libowfat: keep headers under include directory

0.32 wanted to move them under include/libowfat/ 
but it breaks gatling and opentracker