Merge pull request #11335 from nextcloud/chore/fix-codecov

Codecov config improvements

.codecov.yml

@@ -2,6 +2,8 @@ codecov:
   branch: master
   ci:
     - drone.nextcloud.com
+  notify:
+    after_n_builds: 2
 
 coverage:
   precision: 2
@@ -15,6 +17,8 @@ coverage:
 comment:
   layout: "header, diff, changes, uncovered, tree"
   behavior: default
+  require_changes: true
+  after_n_builds: 2
 
 github_checks:
     annotations: false