[INFRA] Set up default rulesets for default and release branches (#521)

* Set up default protection ruleset for default and release branches

* Add struts-committers to bypass teams in .asf.yaml

---------

Co-authored-by: Lukasz Lenart <lukaszlenart@apache.org>

Author: asf-gitbox-commits

.asf.yaml

@@ -14,5 +14,18 @@ github:
   del_branch_on_merge: true
   autolink_jira:
     - WW
-  dependabot_alerts:  true
+  dependabot_alerts: true
   dependabot_updates: true
+  rulesets:
+    - name: "Default Branch Protection"
+      type: branch
+      branches:
+        includes:
+          - "~DEFAULT_BRANCH"
+          - "release/*"
+        excludes: []
+      bypass_teams:
+        - root
+        - "struts-committers"
+      restrict_deletion: true
+      restrict_force_push: true