Bump self_cell from 1.0.1 to 1.0.2 in /src/rust

Bumps [self_cell](https://github.com/Voultapher/self_cell) from 1.0.1 to 1.0.2.
- [Release notes](https://github.com/Voultapher/self_cell/releases)
- [Commits](Voultapher/self_cell@v1.0.1...v1.0.2)

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

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