Enables testing properly the ICS header check which is ignored if content-type is text/calendar. Part-of: <https://gitlab.gnome.org/GNOME/gnome-calendar/-/merge_requests/814>
Enables testing properly the ICS header check which is ignored if content-type is text/calendar. Part-of: <https://gitlab.gnome.org/GNOME/gnome-calendar/-/merge_requests/814>