chore(deps): update dependency tox to v4.21.0

Author: descope[bot]

pyproject.toml

@@ -59,7 +59,7 @@ flake8-bugbear = {version = "24.1.17", python = ">=3.8.1"}
 liccheck = "0.9.2"
 isort = {version = "5.13.2", python = ">=3.8"}
 pep8-naming = {version = "0.13.3", python = ">=3.8"}
-tox = {version = "4.12.1", python = ">=3.8"}
+tox = {version = "4.21.0", python = ">=3.8"}
 
 [tool.poetry.group.format.dependencies]
 black = {version = "24.3.0", python = ">=3.8"}