chore(deps): update axum-extra requirement in /veza-stream-server

Updates the requirements on [axum-extra](https://github.com/tokio-rs/axum) to permit the latest version.
- [Release notes](https://github.com/tokio-rs/axum/releases)
- [Changelog](https://github.com/tokio-rs/axum/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tokio-rs/axum/compare/axum-extra-v0.9.0...axum-extra-v0.12.5)

---
updated-dependencies:
- dependency-name: axum-extra
  dependency-version: 0.12.5
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

veza-stream-server/Cargo.toml

@@ -147,7 +147,7 @@ subtle = "2.4"
 mime_guess = "2.0"
 tokio-util = { version = "0.7", features = ["codec"] }
 headers = "0.4"
-axum-extra = { version = "0.9", features = ["typed-header"] }
+axum-extra = { version = "0.12", features = ["typed-header"] }
 hex = "0.4"
 url = "2.5"