Log Message:
pango: updated to 1.48.3

Overview of changes in 1.48.3
=============================
- Miscellaneous introspection fixes
- Make pango_attr_list_splice clip inserted attrbiutes
- Do costly fontconfig calls in threads
- markup: Fix issues with accel handling
- docs: Convert docs to use gi-docgen
- Fix build against harfbuzz < 2.6

Overview of changes in 1.48.2
=============================
- Fix memory leaks reported by asan
- Avoid overflow in pango_attr_list_update
- Add a valgrind suppression file
- Make tests more robust
- Fix pango_font_describe for Emoji fonts

Overview of changes in 1.48.1
=============================
- Require GLib 2.62
- Require meson 0.55.3
- ci: Add a MacOS build
- macos: Implement pango_font_get_face
- Fix itemization of multi-paragraph layouts
- Fix a few memory leaks
- Fix glyph origins in vertical layout