chore: prepare release 4.9.0

Author: leodevian

CHANGELOG.md

@@ -9,6 +9,15 @@ This project uses [*towncrier*](https://towncrier.readthedocs.io/).
 
 <!-- towncrier release notes start -->
 
+## [4.9.0](https://github.com/leodevian/modern-python/tree/v4.9.0)
+
+### Changed
+
+- Remove `if __name__ == "__main__":` from `__main__.py`.
+- Stop turning warnings into errors when serving the documentation locally.
+- Use raw strings in `mkdocs.yaml`.
+
+
 ## [4.8.0](https://github.com/leodevian/modern-python/tree/v4.8.0)
 
 ### Changed

changelog.d/+980d1ef9.changed.md

@@ -1,6 +1,6 @@
 [project]
 name = "modern-python"
-version = "4.8.0"
+version = "4.9.0"
 description = "Copier template for Python projects"
 readme = "README.md"
 keywords = [