Bump the minor-patch-dependencies group with 3 updates

Bumps the minor-patch-dependencies group with 3 updates: [serde](https://github.com/serde-rs/serde), [serde_json](https://github.com/serde-rs/json) and [pyo3](https://github.com/pyo3/pyo3).


Updates `serde` from 1.0.196 to 1.0.203
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.196...v1.0.203)

Updates `serde_json` from 1.0.113 to 1.0.117
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](serde-rs/json@v1.0.113...v1.0.117)

Updates `pyo3` from 0.19.2 to 0.21.2
- [Release notes](https://github.com/pyo3/pyo3/releases)
- [Changelog](https://github.com/PyO3/pyo3/blob/main/CHANGELOG.md)
- [Commits](PyO3/pyo3@v0.19.2...v0.21.2)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-patch-dependencies
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-patch-dependencies
- dependency-name: pyo3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-patch-dependencies
...

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

Cargo.toml

@@ -17,5 +17,5 @@ serde_json = "1.0"
 canonical_json = "0.5.0"
 
 [dependencies.pyo3]
-version = "0.19.2"
+version = "0.21.2"
 features = ["extension-module"]