In export filename, diacritics are replaced by "ý"

[annelhote]

See attached file

Example : Universitý de Lorraine (UL) _ ývolution du taux d'accýs ouvert des publications scientifiques de l'universitý de Lorraine, avec un DOI Crossref, par annýe d'observation

[annelhote]

It is a bug from Highcharts lib that have been resolved in version 11.3.0. BUT upgrading the highcharts lib version break the build of the app.