Log Message:
Update accerciser3 to 3.22.0

What's New
==========
- Added AppData file
- Better fix for #709122
- Fix schema translations
- Provide a symbolic variant of the app icon
- Remove reference to icons/HighContrast/Makefile
- Preference dialog right resizable
- Bringing the rsvg-based highlight feature back
- Allow interface viewer states to fill horizontally

Contributors: Daniel Mustieles, Matthias Clasen, Jakub Steiner, Javier Jardón,
Joseph Scheuhammer, Richard Hughes and Javier Hernández.

New And Updated Translations
(lots)