Update rustls

rustls replaced ring with aws-lc-rs as default crypto backend,
expose features to select between the two, along with a feature on whether to enable tls 1.2

Cargo.toml

@@ -42,7 +42,8 @@ twox-hash = "1"
 url = "2.1"
 
 [dependencies.tokio-rustls]
-version = "0.25"
+version = "0.26"
+default-features = false
 optional = true
 
 [dependencies.tokio-native-tls]
@@ -54,8 +55,8 @@ version = "0.2"
 optional = true
 
 [dependencies.rustls]
-version = "0.22.2"
-features = []
+version = "0.23"
+default-features = false
 optional = true
 
 [dependencies.rustls-pemfile]
@@ -117,6 +118,10 @@ rustls-tls = [
     "rustls-pemfile",
 ]
 
+aws-lc-rs = ["rustls/aws_lc_rs", "tokio-rustls/aws_lc_rs"]
+ring = ["rustls/ring", "tokio-rustls/ring"]
+tls12 = ["rustls/tls12", "tokio-rustls/tls12"]
+
 binlog = ["mysql_common/binlog"]
 
 # mysql_common features