fix: move tool.maturin section in pyproject.toml to the correct block

Author: 56kyle

{{cookiecutter.project_name}}/pyproject.toml

@@ -51,11 +51,11 @@ Repository = "https://github.com/{{ cookiecutter.github_user | lower | replace('
 [build-system]
 requires = "maturin>=1.3.0,<2.0"
 build-backend = "maturin"
+
+[tool.maturin]
+rust-src = "rust"
 {% else -%}
 [build-system]
 requires = "setuptools>=61.0"
 build-backend = "setuptools.build_meta"
-
-[tool.maturin]
-rust-src = "rust"
 {% endif -%}