SLING-12866 - Restrict force pushes, auto-delete branches on merge

.asf.yaml

diff --git a/.asf.yaml b/.asf.yaml
index e051e79..806ed4e 100644
--- a/.asf.yaml
+++ b/.asf.yaml
@@ -11,6 +11,10 @@
   - "INFRA"
   - "FELIX"
   - "MNG"
+  pull_requests:
+    del_branch_on_merge: true
+  protected_branches:
+    master: {}
 notifications:
   jira_options: "link"
   pullrequests_bot_sonarcloud: "commits@sling.apache.org"