chore(rust): bump libloading from 0.8.3 to 0.8.6 in /rust

Bumps [libloading](https://github.com/nagisa/rust_libloading) from 0.8.3 to 0.8.6.
- [Commits](nagisa/rust_libloading@0.8.3...0.8.6)

---
updated-dependencies:
- dependency-name: libloading
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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