fix(deps): update rust crate axum to v0.7.9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
axum	dependencies	patch	0.7.4 -> 0.7.9

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Release Notes

tokio-rs/axum (axum)

v0.7.9: axum - v0.7.9

Compare Source

• fixed: Avoid setting content-length before middleware (#​3031)

v0.7.8: axum - v0.7.8

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• fixed: Skip SSE incompatible chars of serde_json::RawValue in Event::json_data (#​2992)
• added: Add method_not_allowed_fallback to set a fallback when a path matches but there is no handler for the given HTTP method (#​2903)
• added: Add MethodFilter::CONNECT, routing::connect[_service]
  and MethodRouter::connect[_service] (#​2961)
• added: Add NoContent as a self-described shortcut for StatusCode::NO_CONTENT (#​2978)

v0.7.7: axum - v0.7.7

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• change: Remove manual tables of content from the documentation, since
  rustdoc now generates tables of content in the sidebar (#​2921)

v0.7.6: axum - v0.7.6

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• change: Avoid cloning Arc during deserialization of Path
• added: axum::serve::Serve::tcp_nodelay and axum::serve::WithGracefulShutdown::tcp_nodelay (#​2653)
• added: Router::has_routes function (#​2790)
• change: Update tokio-tungstenite to 0.23 (#​2841)
• added: Serve::local_addr and WithGracefulShutdown::local_addr functions (#​2881)

v0.7.5: axum - v0.7.5

Compare Source

• fixed: Fixed layers being cloned when calling axum::serve directly with
  a Router or MethodRouter (#​2586)
• fixed: h2 is no longer pulled as a dependency unless the http2 feature
  is enabled (#​2605)

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