Log Message:
pango: update to 1.52.0.

Based on wip/pango by pin@

Overview of changes in 1.52.0, 25-02-2024
=========================================
- Add pango_font_map_reload_font
- Improve formatting of font sizes

Overview of changes in 1.51.2, 10-02-2024
=========================================
- Build improvements on Windows
- Use single fontconfig thread
- Fix problems with spaces at line ends
- Allow custom fonts on Windows
- pango-viewer: Fix hint-metrics options
- Pangofont: Add properties

Overview of changes in 1.51.0, 11-08-2023
=========================================
- itemize: Improve script itemization
- build: Check for cairo DWrite dependency
- win32: Fix various issues and crashes
- layout: Add a missing switch case