Rename configuration option removed in tox 4.0

See https://tox.wiki/en/latest/changelog.html#deprecations-and-removals-4-0-0rc4

Author: nsoranzo

tox.ini

@@ -65,13 +65,13 @@ setenv =
     2101: PLANEMO_TEST_GALAXY_BRANCH=release_21.01
 skip_install =
     doc_test,lint,lint_docs,lint_docstrings,mypy,gxwf_test_test: True
-whitelist_externals =
+allowlist_externals =
     lint_docs: make
     gxwf_test_test: make
 
 
 [testenv:doc_test]
 commands = bash scripts/run_doc_test.sh
 skipsdist = True
-whitelist_externals = bash
+allowlist_externals = bash
 deps =