update tox config for tox 4

dhellmann · dhellmann · commit ef3d2d12b164 · 2023-01-15T10:41:36.000-05:00
diff --git a/tox.ini b/tox.ini
@@ -8,7 +8,7 @@ deps = -rrequirements.txt
 setenv =
     TOXIC = true
     SHELL = /bin/bash
-whitelist_externals =
+allowlist_externals =
     bash
     zsh
     ksh
