deps: update rustls v0.20.1 -> v0.21.0

This commit updates hyper-rustls to use the freshly released rustls
0.21.0.work.

We also use update to the recently released tokio-rustls v0.24.0 to
match rustls versions there, and to webpki-roots 0.23.0.

Cargo.toml

@@ -14,15 +14,15 @@ http = "0.2"
 hyper = { version = "0.14", default-features = false, features = ["client"] }
 log = { version = "0.4.4", optional = true }
 rustls-native-certs = { version = "0.6", optional = true }
-rustls = { version = "0.20.1", default-features = false }
+rustls = { version = "0.21.0", default-features = false }
 tokio = "1.0"
-tokio-rustls = { version = "0.23", default-features = false }
-webpki-roots = { version = "0.22", optional = true }
+tokio-rustls = { version = "0.24.0", default-features = false }
+webpki-roots = { version = "0.23", optional = true }
 
 [dev-dependencies]
 futures-util = { version = "0.3.1", default-features = false }
 hyper = { version = "0.14", features = ["full"] }
-rustls = { version = "0.20.1", default-features = false, features = ["tls12"] }
+rustls = { version = "0.21.0", default-features = false, features = ["tls12"] }
 rustls-pemfile = "1.0.0"
 tokio = { version = "1.0", features = ["io-std", "macros", "net", "rt-multi-thread"] }