build(deps): bump native-tls from 0.2.16 to 0.2.18

Bumps [native-tls](https://github.com/rust-native-tls/rust-native-tls) from 0.2.16 to 0.2.18.
- [Release notes](https://github.com/rust-native-tls/rust-native-tls/releases)
- [Changelog](https://github.com/rust-native-tls/rust-native-tls/blob/main/CHANGELOG.md)
- [Commits](rust-native-tls/rust-native-tls@v0.2.16...v0.2.18)

---
updated-dependencies:
- dependency-name: native-tls
  dependency-version: 0.2.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]