Update pyo3 requirement from 0.21.1 to 0.22.0

Updates the requirements on [pyo3](https://github.com/pyo3/pyo3) to permit the latest version.
- [Release notes](https://github.com/pyo3/pyo3/releases)
- [Changelog](https://github.com/PyO3/pyo3/blob/main/CHANGELOG.md)
- [Commits](PyO3/pyo3@v0.21.1...v0.22.0)

---
updated-dependencies:
- dependency-name: pyo3
  dependency-type: direct:production
...

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

Cargo.toml

@@ -20,7 +20,7 @@ name = "hifitime"
 [dependencies]
 serde = { version = "1.0.155", optional = true }
 serde_derive = { version = "1.0.155", optional = true }
-pyo3 = { version = "0.21.1", features = [
+pyo3 = { version = "0.22.0", features = [
     "extension-module",
     "multiple-pymethods",
 ], optional = true }