Update Rust crate rsa to 0.9.6 (#27479)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [rsa](https://github.com/RustCrypto/RSA) | workspace.dependencies | patch | `0.9.3` -> `0.9.6` |

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GitOrigin-RevId: 6b3322f650a5b2969ccb6dd9de912bcdd41a2470

Author: renovate[bot]

Cargo.toml

@@ -102,7 +102,7 @@ regex = "1"
 reqwest = { version = "0.11.24", features = [ "json", "stream", "gzip" ] }
 reqwest-middleware = "0.2.0"
 ring = "0.17.8"
-rsa = "0.9.3"
+rsa = "0.9.6"
 rusqlite = { version = "0.30", features = [ "bundled" ] }
 saffron = { git = "https://github.com/get-convex/saffron", rev = "1d842379919fb5c1988ac127cebd6167b1eb9bec", features = [ "std" ] }
 schemars = { version = "0.8" }