Update tox from 3.14.6 to 4.9.0

pyup-bot · pyup-bot · commit a2bc008dd875 · 2023-08-16T16:58:13.000+01:00
diff --git a/requirements_dev.txt b/requirements_dev.txt
@@ -3,7 +3,7 @@ bump2version==1.0.0
 wheel==0.34.2
 watchdog==0.10.2
 flake8==3.7.9
-tox==3.14.6
+tox==4.9.0
 coverage==5.0.4
 Sphinx==3.0.1
 twine==3.1.1
