build(deps): update rsa requirement from 0.6.1 to 0.9.4

Updates the requirements on [rsa](https://github.com/RustCrypto/RSA) to permit the latest version.
- [Changelog](https://github.com/RustCrypto/RSA/blob/master/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.7.0-pre...v0.9.4)

---
updated-dependencies:
- dependency-name: rsa
  dependency-type: direct:production
...

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

src/storage/Cargo.toml

@@ -35,7 +35,7 @@ http = "0.2"
 moka = "0.11.2"
 ejdb2rs = {workspace=true}
 ethers = { workspace = true }
-rsa = "0.6.1"
+rsa = "0.9.4"
 rand = "0.8.5"
 tokio = { version = "1.17.0", features = ["full"] }
 chashmap = "2.2.2"