build(deps): bump postgres-openssl from 0.5.2 to 0.5.3

Bumps [postgres-openssl](https://github.com/rust-postgres/rust-postgres) from 0.5.2 to 0.5.3.
- [Release notes](https://github.com/rust-postgres/rust-postgres/releases)
- [Commits](https://github.com/rust-postgres/rust-postgres/compare/postgres-openssl-v0.5.2...postgres-openssl-v0.5.3)

---
updated-dependencies:
- dependency-name: postgres-openssl
  dependency-version: 0.5.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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