OpenSlide Automation

These wraps need updating in [wrapdb](https://github.com/mesonbuild/wrapdb), or in this repo if not imported from wrapdb: ``` libffi 3.4.4 => 3.4.6 ``` I will automatically check wrapdb for updates when this...

These wraps need updating in [wrapdb](https://github.com/mesonbuild/wrapdb), or in this repo if not imported from wrapdb: ``` libxml2 2.15.0 => 2.15.1 sqlite3 3.50.4 => 3.51.0 ``` I will automatically check wrapdb...