Update Rust crate axum to 0.6.4

Cargo.lock

@@ -38,9 +38,9 @@ checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "axum"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "678c5130a507ae3a7c797f9a17393c14849300b8440eac47cdb90a5bdcb3a543"
+checksum = "e5694b64066a2459918d8074c2ce0d5a88f409431994c2356617c8ae0c4721fc"
 dependencies = [
  "async-trait",
  "axum-core",

Cargo.toml

@@ -11,7 +11,7 @@ name = "site"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-axum = { version = "0.6.3" }
+axum = { version = "0.6.4" }
 hyper = { version = "0.14.21" }
 tokio = { version = "1.23.0", features = ["full"] }
 tracing = "0.1.37"