build(deps): update tokio-rustls requirement from 0.12.1 to 0.13.0

Updates the requirements on [tokio-rustls](https://github.com/quininer/tokio-rustls) to permit the latest version.
- [Release notes](https://github.com/quininer/tokio-rustls/releases)
- [Commits](https://github.com/quininer/tokio-rustls/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

Cargo.toml

@@ -18,7 +18,7 @@ hyper = { version = "0.13.0", default-features = false }
 rustls = "0.16"
 rustls-native-certs = { version = "0.2.1", optional = true }
 tokio = "0.2.4"
-tokio-rustls = "0.12.1"
+tokio-rustls = "0.13.0"
 webpki = "0.21.0"
 webpki-roots = { version = "0.19", optional = true }