chore: prepare tokio-native-tls 0.3.1 (hyperium#129)

# 0.3.1 (February 4th, 2023)

### Additions
- Add Vendored Feature ([hyperium#125])
- Implement AsRawFd for both tokio-rustls and tokio-native-tls TlsStream\<S\> ([hyperium#74])

### Internal
- Fix warning about renamed lint ([hyperium#93])
- fix a handful of lints, one of which was breaking the build ([hyperium#65])

[hyperium#65]: tokio-rs/tls#65
[hyperium#74]: tokio-rs/tls#74
[hyperium#93]: tokio-rs/tls#93
[hyperium#125]: tokio-rs/tls#125

tokio-native-tls/Cargo.toml

@@ -8,7 +8,7 @@ name = "tokio-native-tls"
 #   - README.md
 # - Update CHANGELOG.md.
 # - Create "v0.1.x" git tag.
-version = "0.3.0"
+version = "0.3.1"
 edition = "2018"
 authors = ["Tokio Contributors <team@tokio.rs>"]
 license = "MIT"