Use checks api

lotas · web-flow · commit df440372c0b6 · 2023-10-10T14:13:26.000+02:00
Switch to checks API. 

Also test build pipeline, why tasks are deadline expired
diff --git a/.taskcluster.yml b/.taskcluster.yml
@@ -1,4 +1,5 @@
 version: 1
+reporting: checks-v1
 policy:
   pullRequests: public
 tasks:
