build(deps): bump rsa from 0.8.0 to 0.8.1 (#61)

Bumps [rsa](https://github.com/RustCrypto/RSA) from 0.8.0 to 0.8.1.
- [Release notes](https://github.com/RustCrypto/RSA/releases)
- [Changelog](https://github.com/RustCrypto/RSA/blob/master/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.8.0...v0.8.1)

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

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]