Bug 1888666 - Port bug 1888131: Use taskcluster-built python for tests. r=dandarnell

Differential Revision: https://phabricator.services.mozilla.com/D206115

--HG--
extra : amend_source : 80c23527ce1fa2d766e43b92bc7f4c0c68c112e3

taskcluster/ci/test/kind.yml

@@ -27,6 +27,7 @@ jobs-from:
 job-defaults:
     attributes:
         retrigger: true
+    use-python: default
     optimization:
         by-test-platform:
             .*-tsan.*/opt: