Update tokio-tungstenite requirement from 0.20 to 0.23

Updates the requirements on [tokio-tungstenite](https://github.com/snapview/tokio-tungstenite) to permit the latest version.
- [Changelog](https://github.com/snapview/tokio-tungstenite/blob/master/CHANGELOG.md)
- [Commits](https://github.com/snapview/tokio-tungstenite/commits)

---
updated-dependencies:
- dependency-name: tokio-tungstenite
  dependency-type: direct:production
...

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

Cargo.toml

@@ -21,14 +21,14 @@ test = ["tokio-tungstenite/connect"]
 futures = {version = "0.3", default-features = false, features = ["async-await", "std"]}
 tokio = {version = "1.8", default-features = false, features = ["rt", "time"]}
 tracing = {version = "0.1", default-features = false, features = ["std"]}
-tokio-tungstenite = {version = "0.20", default-features = false}
+tokio-tungstenite = {version = "0.23", default-features = false}
 
 [dev-dependencies]
 rand = {version = "0.8", default-features = false, features = ["std", "std_rng"]}
 serde = {version = "1.0", features = ["derive"]}
 test-log = {version = "0.2.8", default-features = false, features = ["trace"]}
 tokio = {version = "1.8", default-features = false, features = ["rt", "macros", "net", "test-util"]}
-tokio-tungstenite = {version = "0.20", default-features = false, features = ["connect"]}
+tokio-tungstenite = {version = "0.23", default-features = false, features = ["connect"]}
 tracing-subscriber = {version = "0.3", default-features = false, features = ["ansi", "env-filter", "fmt", "local-time"]}
 url = "2.0"