chore(deps): bump postgres-protocol from 0.6.4 to 0.6.5 (#391)

Bumps [postgres-protocol](https://github.com/sfackler/rust-postgres) from 0.6.4 to 0.6.5.
- [Release notes](https://github.com/sfackler/rust-postgres/releases)
- [Commits](https://github.com/sfackler/rust-postgres/compare/postgres-protocol-v0.6.4...postgres-protocol-v0.6.5)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -37,7 +37,7 @@ futures = "0.3"
 socket2 = { version = "0.4.7", features = ["all"] }
 nix = "0.26.2"
 atomic_enum = "0.2.0"
-postgres-protocol = "0.6.4"
+postgres-protocol = "0.6.5"
 fallible-iterator = "0.2"
 
 [target.'cfg(not(target_env = "msvc"))'.dependencies]