community/olm: upgrade to 3.2.13
https://gitlab.matrix.org/matrix-org/olm/-/tags/3.2.13
This release includes the following changes since 3.2.12:
- Fix compilation with newer versions of emscripten.
- The npm package is compiled with emscripten 3.1.17 to fix compatibility with node 18.
- Add py.typed to Python wheels.
- Some documentation fixes and updates.
- Improve the pkgconfig file.