harfbuzz: Update to version 7.3.0

harfbuzz: Update to version 7.3.0

- Update from 7.2.0 to 7.3.0
- Update of rootfile
- Changelog
Overview of changes leading to 7.3.0
    Tuesday, May 9, 2023
	- Speedup applying glyph variation in VarComposites fonts (over 40% speedup).
	  (Behdad Esfahbod)
	- Speedup instancing some fonts (over 20% speedup in instancing RobotoFlex).
	  (Behdad Esfahbod)
	- Speedup shaping some fonts (over 30% speedup in shaping Roboto).
	  (Behdad Esfahbod)
	- Support subsetting VarComposites and beyond-64k fonts. (Behdad Esfahbod)
	- New configuration macro HB_MINIMIZE_MEMORY_USAGE to favor optimizing memory
	  usage over speed. (Behdad Esfahbod)
	- Supporting setting the mapping between old and new glyph indices during
	  subsetting. (Garret Rieger)
	- Various fixes and improvements.
	  (Behdad Esfahbod, Denis Rochette, Garret Rieger, Han Seung Min, Qunxin Liu)
	- New API:
		+hb_subset_input_old_to_new_glyph_mapping()

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