Update pythonize requirement from 0.19 to 0.20

Updates the requirements on [pythonize](https://github.com/davidhewitt/pythonize) to permit the latest version.
- [Release notes](https://github.com/davidhewitt/pythonize/releases)
- [Changelog](https://github.com/davidhewitt/pythonize/blob/main/CHANGELOG.md)
- [Commits](davidhewitt/pythonize@v0.19.0...v0.19.0)

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

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

Cargo.toml

@@ -75,7 +75,7 @@ num = "0.4.0"
 enum-iterator = "1.4.0"
 getrandom = { version = "0.2", features = ["js"] }
 typed-builder = "0.18.0"
-pythonize = { version = "0.19", optional = true }
+pythonize = { version = "0.20", optional = true }
 
 [dev-dependencies]
 polars = { version = "0.34.2", features = ["parquet"] }