deps: bump the axum group with 1 update

Bumps the axum group with 1 update: [axum](https://github.com/tokio-rs/axum).


Updates `axum` from 0.7.1 to 0.7.3
- [Release notes](https://github.com/tokio-rs/axum/releases)
- [Changelog](https://github.com/tokio-rs/axum/blob/main/CHANGELOG.md)
- [Commits](tokio-rs/axum@axum-v0.7.1...axum-v0.7.3)

---
updated-dependencies:
- dependency-name: axum
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: axum
...

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

examples/browser-webrtc/Cargo.toml

@@ -23,7 +23,7 @@ tracing = "0.1.37"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-axum = "0.7.1"
+axum = "0.7.3"
 libp2p = { path = "../../libp2p", features = [ "ed25519", "macros", "ping", "tokio"] }
 libp2p-webrtc = { workspace = true, features = ["tokio"] }
 rust-embed = { version = "8.1.0", features = ["include-exclude", "interpolate-folder-path"] }