build(rust): bump postgres-native-tls from 0.5.0 to 0.5.1

Bumps [postgres-native-tls](https://github.com/sfackler/rust-postgres) from 0.5.0 to 0.5.1.
- [Release notes](https://github.com/sfackler/rust-postgres/releases)
- [Commits](rust-postgres/rust-postgres@postgres-native-tls-v0.5.0...postgres-native-tls-v0.5.1)

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

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

Author: dependabot[bot]