fix(deps): update rust crate axum to v0.8.4

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This PR contains the following updates:

Package	Type	Update	Change
axum	dependencies	patch	=0.8.1 -> =0.8.4

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Release Notes

tokio-rs/axum (axum)

v0.8.4: axum v0.8.4

Compare Source

• added: Router::reset_fallback (#​3320)
• added: WebSocketUpgrade::selected_protocol (#​3248)
• fixed: Panic location for overlapping method routes (#​3319)
• fixed: Don't leak a tokio task when using serve without graceful shutdown (#​3129)

v0.8.3: axum v0.8.3

Compare Source

• added: Implement From<Bytes> for Message (#​3273)
• added: Implement OptionalFromRequest for Json (#​3142)
• added: Implement OptionalFromRequest for Extension (#​3157)
• added: Allow setting the read buffer capacity of WebSocketUpgrade (#​3178)
• changed: Improved code size / compile time of dependent crates (#​3285, #​3294)

v0.8.2: axum v0.8.2

Yanked from crates.io due to unforeseen breaking change, see #​3190 for details

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• added: Implement OptionalFromRequest for Json (#​3142)
• added: Implement OptionalFromRequest for Extension (#​3157)
• changed: Make the status function of rejections a const function, such
  as JsonRejection, QueryRejection and PathRejection (#​3168)

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