Update tokio-tungstenite requirement from 0.19.0 to 0.20.0 (#1263)

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](snapview/tokio-tungstenite@v0.19.0...v0.20.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

kube-client/Cargo.toml

@@ -59,7 +59,7 @@ jsonpath_lib = { version = "0.3.0", optional = true }
 tokio-util = { version = "0.7.0", optional = true, features = ["io", "codec"] }
 hyper = { version = "0.14.13", optional = true, features = ["client", "http1", "stream", "tcp"] }
 hyper-rustls = { version = "0.24.0", optional = true }
-tokio-tungstenite = { version = "0.19.0", optional = true }
+tokio-tungstenite = { version = "0.20.0", optional = true }
 tower = { version = "0.4.13", optional = true, features = ["buffer", "filter", "util"] }
 tower-http = { version = "0.4.0", optional = true, features = ["auth", "map-response-body", "trace"] }
 hyper-timeout = {version = "0.4.1", optional = true }