Log Message:
harfbuzz: updated to 5.3.1

5.3.1

Subsetter repacker fixes. (Garret Rieger)
Adjust Grapheme clusters for Katakana voiced sound marks. (Behdad Esfahbod)
New hb-subset option --preprocess-face.

5.3.0

Don’t add glyphs from dropped MATH or COLR tables to the subset glyphs. \ 
(Khaled Hosny)
Map rlig to appropriate AAT feature selectors. (Jonathan Kew)
Update USE data files to latest version. (David Corbett)
Check CBDT extents first before outline tables, to help with fonts that also \ 
include an empty glyf table. (Khaled Hosny)
More work towards variable font instancing in the subsetter. (Qunxin Liu)
Subsetter repacker improvements. (Garret Rieger)
New API:
+hb_ot_layout_lookup_get_optical_bound()
+hb_face_builder_sort_tables()