Update azure-pipelines template repositories

Committed via https://github.com/asottile/all-repos

azure-pipelines.yml

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index c1ef4f4..58dc61d 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -10,7 +10,7 @@
       type: github
       endpoint: github
       name: asottile/azure-pipeline-templates
-      ref: refs/tags/v1.0.0
+      ref: refs/tags/v2.1.0
 
 jobs:
 - template: job--python-tox.yml@asottile