pango: Update to version 1.56.3

pango: Update to version 1.56.3

- Update from version 1.56.1 to 1.56.3
- Update of rootfile
- Changelog
    1.56.3
	- Improve font description serialization
	- fontconfig: Avoid FcFontSetSort when possible
	- coverage: Extend coverage by Unicode decomposition
	- win32: Speed up coverage creation
	- Deprecate pango_font_descriptions_free
    1.56.2
	- Annotation fixes
	- fontconfig: Set optical size for fonts with an opsz axis
	- fontconfig: Make panog_font_map_reload_font scale linearly

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>