Fix ď and ť in regular and bold fonts

Summary:
My commit in https://github.com/KDE/oxygen-fonts/pull/2 already had the ttfs in it, but this website has an unhandled exception when the patch file contains binary changes, so I've manually removed it.

BUG: 386211

Reviewers: Plasma, VDG, ngraham

Reviewed By: VDG, ngraham

Subscribers: abetts, VDG, Plasma, aacid

Differential Revision: https://phabricator.kde.org/D11719