Rename whitelist_externals to allowlist_externals

Author: cclauss

tox.ini

@@ -38,7 +38,7 @@ commands =
 [testenv:docs]
 deps =
     sphinx>=3.5,<5
-whitelist_externals = make
+allowlist_externals = make
 changedir = {toxinidir}/docs
 commands =
     make clean
@@ -50,7 +50,7 @@ deps =
     check-manifest==0.46
     readme-renderer==29.0
     twine>=3.4.1,<4
-whitelist_externals = rm
+allowlist_externals = rm
 commands =
     rm -rf dist/
     check-manifest