build(deps): bump native-tls from 0.2.11 to 0.2.12

Bumps [native-tls](https://github.com/sfackler/rust-native-tls) from 0.2.11 to 0.2.12.
- [Release notes](https://github.com/sfackler/rust-native-tls/releases)
- [Changelog](https://github.com/sfackler/rust-native-tls/blob/master/CHANGELOG.md)
- [Commits](sfackler/rust-native-tls@v0.2.11...v0.2.12)

---
updated-dependencies:
- dependency-name: native-tls
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>