chore(deps): update dependency tox to v4

Author: renovate[bot]

dev-requirements.txt

@@ -186,7 +186,7 @@ stomp.py==8.2.0
 super-state-machine==2.0.2
 tomlkit==0.13.2
 toolz==1.0.0
-tox==3.28.0
+tox==4.26.0
 tox-direct==0.4
 tqdm==4.67.1
 typer==0.15.2