Make build config conditional

Author: jpvelez

template/{% if python %}pyproject.toml{% endif %}.jinja

@@ -45,19 +45,20 @@ dev = [
     "twine>=4.0.0",
 {% endif %}]
 
-[build-system]
+{% if python_package %}[build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"
 
 [tool.hatch.build.targets.wheel]
 packages = ["{{ project_slug }}"]
+{% endif %}
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]
 addopts = "-q"
 
 [tool.ruff]
-target-version = "py39"
+target-version = "py313"
 line-length = 120
 fix = true