chore: upgrade mio dependency (#3207)

Brings in versions of net2 and miow that does not make invalid
memory layout assumptions on std::net::SocketAddr

Author: faern

tokio/Cargo.toml

@@ -101,7 +101,7 @@ fnv = { version = "1.0.6", optional = true }
 futures-core = { version = "0.3.0", optional = true }
 lazy_static = { version = "1.4.0", optional = true }
 memchr = { version = "2.2", optional = true }
-mio = { version = "0.6.20", optional = true }
+mio = { version = "0.6.23", optional = true }
 iovec = { version = "0.1.4", optional = true }
 num_cpus = { version = "1.8.0", optional = true }
 parking_lot = { version = "0.11.0", optional = true } # Not in full