Uharfbuzz

- Update to HarfBuzz 3.1.2 (104)

* Upgrade HarfBuzz to 2.9.0 (101)
* Enable Uniscribe shaper on Windows (77, 101)

* Build wheels for pypy3 as well as macOS arm64 and universal2 wheels.
* Add a Blob class wrapper for hb_blob_t, and allow constructing Face
from it. Blob has from_file_path() method that mmap’s files instead of
leading all data in memory upfront.

* upgraded HarfBuzz to 2.8.2 (91)
* Buffer.glyph_positions() can now return None during tracing
* enabled DirectWrite shaper on Windows (77)
* fixed crash when all shapers fail (83), a RuntimeError exception will
be raised in this case
* respect return value from message callback function (51)
* fix crash when accessing Buffer.language before setting it (89), None
will be returned for unset language and script

* fix CI to build 64 bit wheels for Windows (86, 88)

* upgraded HarfBuzz to 2.8.1
* added font.get_glyph_extents (80, 82)
* added font.get_nominal_glyph (81, resolving 22)
* added font.get_var_coords_normalized (81)
* added font.set_var_coords_normalized (81)