Bump sodium-universal from 3.0.2 to 3.0.3

Bumps [sodium-universal](https://github.com/sodium-friends/sodium-universal) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/sodium-friends/sodium-universal/releases)
- [Commits](sodium-friends/sodium-universal@v3.0.2...v3.0.3)

Signed-off-by: dependabot[bot] <support@github.com>