Update tokio-tungstenite requirement from 0.21 to 0.26

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@v0.21.0...v0.26.2)

---
updated-dependencies:
- dependency-name: tokio-tungstenite
  dependency-version: 0.26.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -40,7 +40,7 @@ serde_json = { version = "1.0", default-features = false, features = ["alloc"]}
 sha2 = { version = "0.10", default-features = false }
 sled = "0.34"
 toml = "0.8"
-tokio-tungstenite = "0.21"
+tokio-tungstenite = "0.26"
 tokio = { version = "1", features = ["full"] }
 tracing = "0.1"
 unicode-normalization = { version = "0.1", default-features = false }