Log Message:
py-pillow_heif: updated to 0.13.1

0.13.1

Added

- Returned `PyPy 3.8` wheels.

Changed

- Linux: `libaom` updated to `3.6.1`, `musllinux` builds switched to \ 
`musllinux_1_2` tag.

Fixed

- When building from source, the installer additionally searches for `libheif` \ 
using `pkg-config`.