Changelog for mingw64-jansson-2.12-2.fc31.noarch.rpm :

* Thu Jul 25 2019 Fedora Release Engineering - 2.12-2- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
* Wed Jul 03 2019 Michał Janiszewski - 2.12-1- Initial MinGW packaging