Bump rsa from 0.9.5 to 0.9.6

Bumps [rsa](https://github.com/RustCrypto/RSA) from 0.9.5 to 0.9.6.
- [Changelog](https://github.com/RustCrypto/RSA/blob/master/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.9.5...v0.9.6)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -30,7 +30,7 @@ p256 = { version = "0.13", default-features = false, features = ["ecdsa"] }
 p384 = { version = "0.13", default-features = false, features = ["ecdsa"] }
 serde = { version = "1", features = ["serde_derive"] }
 rand_core = { version = "0.6", features = ["std"] }
-rsa = "0.9.5"
+rsa = "0.9.6"
 signature = { version = "2", features = ["derive"] }
 subtle = "2"
 thiserror = "1"