Log Message:
harfbuzz: update to 4.4.1.

Overview of changes leading to 4.4.1
Wednesday, June 29, 2022
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- Fix test failure with some compilers.
- Fix Telugu and Kannada kerning regression.

Overview of changes leading to 4.4.0
Monday, June 27, 2022
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- Caching of variable fonts shaping, in particular when using HarfBuzz’s own
  font loading functions (ot). Bringing performance of variable shaping in par
  with non-variable fonts shaping. (Behdad Esfahbod)
- Caching of format 2 “Contextual Substitution” and “Chained Contexts
  Substitution” lookups. Resulting in up to 20% speedup of lookup-heavy fonts
  like Gulzar or Noto Nastaliq Urdu. (Behdad Esfahbod)
- Improved ANSI output from hb-view. (Behdad Esfahbod)
- Support for shaping legacy, pre-OpenType Windows 3.1-era, Arabic fonts that
  relied on a fixed PUA encoding. (Khaled Hosny, Behdad Esfahbod)
- Sinhala script is now shaped by the USE shaper instead of “indic” one.
  (Behdad Esfahbod, David Corbett)
- Thai shaper improvements. (David Corbett)
- hb-ot-name API supports approximate BCP-47 language matching, for example
  asking for “en_US” in a font that has only “en” names will return them.
  (Behdad Esfahbod)
- Optimized TrueType glyph shape loading. (Behdad Esfahbod)
- Fix subsetting of HarfBuzz faces created via hb_face_create_for_tables().
  (Garret Rieger)
- Add 32 bit var store support to the subsetter. (Garret Rieger)

- New API
+HB_BUFFER_FLAG_DEFINED
+HB_BUFFER_SERIALIZE_FLAG_DEFINED
+hb_font_changed()
+hb_font_get_serial()
+hb_ft_hb_font_changed()
+hb_set_hash()
+hb_map_copy()
+hb_map_hash()