bug 1455061: upgrade releng docker images to latest python + python dependency versions. r=rail

taskcluster/ci/release-bouncer-check/kind.yml

@@ -22,7 +22,7 @@ job-defaults:
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         max-run-time: 1200
-        docker-image: {in-tree: "lint"}
+        docker-image: {in-tree: "update-verify"}
     run:
         using: run-task
         sparse-profile: mozharness

taskcluster/ci/release-final-verify/kind.yml

@@ -21,7 +21,8 @@ job-defaults:
    worker:
       implementation: docker-worker
       os: linux
-      docker-image: mozillareleases/python-test-runner@sha256:0729c2e6e7bc0d6a4cbccb2e66a78e1d8e8cbb5e44105d56e3c9c610230ebd69
+      docker-image:
+         in-tree: "update-verify"
       max-run-time: 7200
       retry-exit-status: [1]
       env:

taskcluster/ci/release-secondary-final-verify/kind.yml

@@ -23,7 +23,8 @@ job-defaults:
    worker:
       implementation: docker-worker
       os: linux
-      docker-image: mozillareleases/python-test-runner@sha256:0729c2e6e7bc0d6a4cbccb2e66a78e1d8e8cbb5e44105d56e3c9c610230ebd69
+      docker-image:
+         in-tree: "update-verify"
       max-run-time: 7200
       retry-exit-status: [1]
       env: