Update aead requirement from 0.1.1 to 0.2.0
Update aead requirement from 0.1.1 to 0.2.0

Updates the requirements on [aead](https://github.com/RustCrypto/traits) to permit the latest version.
- [Release notes](https://github.com/RustCrypto/traits/releases)
- [Commits](https://github.com/RustCrypto/traits/compare/aead-v0.1.1...aead-v0.2.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sopium/noise-rust