fix: add missing list definition syntax in pyproject.toml

Author: 56kyle

{{cookiecutter.project_name}}/pyproject.toml

@@ -49,13 +49,13 @@ Repository = "https://github.com/{{ cookiecutter.github_user | lower | replace('
 
 {% if cookiecutter.add_rust_extension == 'y' -%}
 [build-system]
-requires = "maturin>=1.3.0,<2.0"
+requires = ["maturin>=1.3.0,<2.0"]
 build-backend = "maturin"
 
 [tool.maturin]
 rust-src = "rust"
 {% else -%}
 [build-system]
-requires = "setuptools>=61.0"
+requires = ["setuptools>=61.0"]
 build-backend = "setuptools.build_meta"
 {% endif -%}