Bump pyo3 from 0.16.3 to 0.16.4 (Qiskit#588)

Bumps [pyo3](https://github.com/pyo3/pyo3) from 0.16.3 to 0.16.4.
- [Release notes](https://github.com/pyo3/pyo3/releases)
- [Changelog](https://github.com/PyO3/pyo3/blob/main/CHANGELOG.md)
- [Commits](PyO3/pyo3@v0.16.3...v0.16.4)

---
updated-dependencies:
- dependency-name: pyo3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

Cargo.toml

@@ -32,7 +32,7 @@ num-complex = "0.4"
 retworkx-core = { path = "retworkx-core", version = "=0.12.0" }
 
 [dependencies.pyo3]
-version = "0.16.3"
+version = "0.16.4"
 features = ["extension-module", "hashbrown", "num-bigint", "num-complex", "indexmap"]
 
 [dependencies.hashbrown]