Update Rust crate tokio to 1.20.0

Cargo.lock

@@ -932,10 +932,11 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.19.2"
+version = "1.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c51a52ed6686dd62c320f9b89299e9dfb46f730c7a48e635c19f21d116cb1439"
+checksum = "57aec3cfa4c296db7255446efb4928a6be304b431a806216105542a67b6ca82e"
 dependencies = [
+ "autocfg",
  "bytes",
  "libc",
  "memchr",

Cargo.toml

@@ -13,7 +13,7 @@ name = "site"
 [dependencies]
 axum = { version = "0.5.11" }
 hyper = { version = "0.14.19" }
-tokio = { version = "1.19.2", features = ["full"] }
+tokio = { version = "1.20.0", features = ["full"] }
 tracing = "0.1.35"
 tracing-subscriber = {version = "0.3.14", features = ["env-filter"] }
 tower-http = { version = "0.3.4", features = ["fs", "trace", "auth"] }