Bump _includes/liboqs from f4b9622 to 5afca64

Bumps [_includes/liboqs](https://github.com/open-quantum-safe/liboqs) from `f4b9622` to `5afca64`.
- [Release notes](https://github.com/open-quantum-safe/liboqs/releases)
- [Commits](open-quantum-safe/liboqs@f4b9622...5afca64)

---
updated-dependencies:
- dependency-name: _includes/liboqs
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>