chore(deps): update pycairo requirement from >=1.20.0 to >=1.29.1

[dependabot]

Updates the requirements on pycairo to permit the latest version.

Release notes

Sourced from pycairo's releases.

v1.29.1

https://pycairo.readthedocs.io/en/latest/changelog.html#v1-29-1

Changelog

Sourced from pycairo's changelog.

1.29.1 - 2026-08-07

• Update dependencies (libpng, zlib) for the Windows wheels :pr:442
• Fix documentation build with Python 3.15 :pr:441
• Build wheels for Python 3.15 (except for 32bit Windows) :pr:444
• Fix a memory leak in :meth:ScaledFont.text_to_glyphs :pr:446
• Fix some minor reference leaks :pr:447

.. _v1.29.0:

1.29.0 - 2025-11-11

• :meth:ImageSurface.get_data: Return empty memoryview for empty image :pr:418
• :meth:ImageSurface.create_for_data: support empty images :pr:419
• Drop support for Python 3.9 :pr:428
• Drop support for PyPy 3.10
• Support multi-phase init :pr:413
• Experimental support for free-threaded Python :pr:430 :pr:429
• Update dependencies (libpng, pixman) for the Windows wheels :pr:431
• build: add "no-x11" option to disable X11 surface support :pr:432 :issue:420
• dev: support uv for development :pr:433

.. _v1.28.0:

1.28.0 - 2025-04-14

• Changes:
  • Remove hypothesis test dependency :pr:398
  • Updated cairo in Windows wheels from 1.18.2 to 1.18.4 :pr:393
  • Provide arm64 Windows wheels again
  • Release the input buffer passed to :meth:ImageSurface.create_for_data when calling :meth:Surface.finish already, not just when the underlying surface is destroyed :pr:405 :issue:392
  • Return a :class:PathDataType (:class:int subtype) instead of :class:int with :meth:Path.__iter__ :pr:410. This was missed in the 1.13.0 enum change.
  • Emit a :class:DeprecationWarning in case :meth:ImageSurface.get_data is called on an already finished surface :pr:400 :pr:412. In a future version this will raise an exception instead.
  • Emit a :class:DeprecationWarning for the undocumented num_glyphs parameter in :meth:Context.glyph_extents, :meth:Context.glyph_path, :meth:Context.show_glyphs, :meth:ScaledFont.glyph_extents :pr:409
• Fixes:
  • Remove the executable bit from cairo/__init__.py :pr:383
  • Remove usage of removed typing.ByteString to fix compatibility with Python 3.14.0a1 :pr:389
  • docs: Fix pygame integration example using the wrong format :pr:411

... (truncated)

Commits

• 08960e5 release
• e9f5ecf surface_get_mime_data: decref mime_intern
• 7d254aa surface_set_mime_data: decref the interned string
• 756d0b3 _raster_source_release_func: fix missing result decref
• 1e83fe9 scaled_font_text_to_glyphs: fix two leaks
• 2fcbc56 CI: test with 3.15 + build wheels
• 7a2d102 docs: Fix building on Python 3.15
• b2b6937 CI: update actions
• 83ff6da cairo-win32: update to 1.18.4-v3
• 80ea334 Various zizmor warning fixes
• Additional commits viewable in compare view

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