Update tokio-tungstenite requirement from 0.25 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@v0.25.0...v0.26.0)

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

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

Author: dependabot[bot]

juniper_axum/Cargo.toml

@@ -43,7 +43,7 @@ futures = "0.3.22"
 juniper = { version = "0.16", path = "../juniper", features = ["expose-test-schema"] }
 tokio = { version = "1.20", features = ["macros", "net", "rt-multi-thread", "time"] }
 tokio-stream = "0.1"
-tokio-tungstenite = "0.25"
+tokio-tungstenite = "0.26"
 tower-service = "0.3"
 tracing = "0.1"
 tracing-subscriber = "0.3"