Use native TOML syntax for tox (#421)

Fixes #419

pyproject.toml

@@ -204,20 +204,24 @@ write_to = "src/sleplet/_version.py"
 overrides."project.classifiers".inline_arrays = false
 overrides."tool.coverage.paths.source".inline_arrays = false
 overrides."tool.ruff.lint.isort.section-order".inline_arrays = false
+overrides."tool.tox.env_run_base.commands".inline_arrays = false
 
 [tool.tox]
-legacy_tox_ini = """
- [gh]
- python =
- 3.11: py311
- 3.12: py312
-
- [testenv]
- commands =
- pytest --cov --cov-report=lcov
- deps =
- pytest-cov
-
- [tox]
- env_list = py{311,312}
-"""
+env_list = [
+ "py311",
+ "py312",
+]
+env_run_base = {commands = [
+ [
+ "pytest",
+ "--cov",
+ "--cov-report=lcov",
+ ],
+], deps = [
+ "pytest-cov",
+]}
+gh.python = {"3.11" = [
+ "py311",
+], "3.12" = [
+ "py312",
+]}