Update pyo3 requirement from 0.21 to 0.22

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@v0.21.0...v0.21.2)

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

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

Cargo.toml

@@ -44,7 +44,7 @@ snafu = { version = "0.8.0", features = ["backtrace"] }
 lexical-core = "1.0.1"
 heapless = "0.8.0"
 rstest = "0.23.0"
-pyo3 = { version = "0.21", features = ["multiple-pymethods"] }
+pyo3 = { version = "0.22", features = ["multiple-pymethods"] }
 pyo3-log = "0.10"
 serde = "1"
 serde_derive = "1"