What's Changed
* Remove union operator error when target-python is 3.9 or early version by koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/1094
* Add ruff by koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/1095
* Fix only required anyof oneof by koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/1104
* Update mypy version to 1.0.0 by koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/1105
* fix mypy version to >=1.0.1,<1.1.0 by koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/1162
* Docs: typo by KPLauritzen in https://github.com/koxudaxi/datamodel-code-generator/pull/1153
* Fix typo: `docuemnt` -> `document` by kamyar in https://github.com/koxudaxi/datamodel-code-generator/pull/1179
* feat: add support for custom file header by Niraj-Kamdar in https://github.com/koxudaxi/datamodel-code-generator/pull/1164
* Exclude fields with default_factory from --use-default-kwarg by vogre in https://github.com/koxudaxi/datamodel-code-generator/pull/1186
* Bugfix: with deeply nested modules: empty paths did not get an __init__.py file created by dataway in https://github.com/koxudaxi/datamodel-code-generator/pull/1187
* Fix url $id by koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/1214
* (🎁) deps: make typed-ast optional by KotlinIsland in https://github.com/koxudaxi/datamodel-code-generator/pull/1222
New Contributors
* KPLauritzen made their first contribution in https://github.com/koxudaxi/datamodel-code-generator/pull/1153
* kamyar made their first contribution in https://github.com/koxudaxi/datamodel-code-generator/pull/1179
* Niraj-Kamdar made their first contribution in https://github.com/koxudaxi/datamodel-code-generator/pull/1164
* vogre made their first contribution in https://github.com/koxudaxi/datamodel-code-generator/pull/1186
* dataway made their first contribution in https://github.com/koxudaxi/datamodel-code-generator/pull/1187
* KotlinIsland made their first contribution in https://github.com/koxudaxi/datamodel-code-generator/pull/1222
**Full Changelog**: https://github.com/koxudaxi/datamodel-code-generator/compare/0.17.1...0.17.2