build(deps): bump rsa from 0.9.2 to 0.9.3

Bumps [rsa](https://github.com/RustCrypto/RSA) from 0.9.2 to 0.9.3.
- [Changelog](https://github.com/RustCrypto/RSA/blob/master/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.9.2...v0.9.3)

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

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