chore(deps): update rcgen requirement from 0.11.0 to 0.12.0

Updates the requirements on [rcgen](https://github.com/rustls/rcgen) to permit the latest version.
- [Commits](rustls/rcgen@v0.11.0...v0.12.0)

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

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

Cargo.toml

@@ -30,7 +30,7 @@ hyper-tungstenite = "0.11.1"
 moka = { version = "0.12.0", features = ["future"], optional = true }
 openssl = { version = "0.10.39", optional = true }
 rand = { version = "0.8.0", optional = true }
-rcgen = { version = "0.11.0", features = ["x509-parser"], optional = true }
+rcgen = { version = "0.12.0", features = ["x509-parser"], optional = true }
 thiserror = "1.0.30"
 time = { version = "0.3.7", optional = true }
 tokio = { version = "1.24.2", features = ["rt"] }