mergify: update rules (#6706)

.mergify.yml

@@ -2,7 +2,8 @@ queue_rules:
   - name: default
     merge_method: squash
     conditions:
-      - check-success=fleet-ci/pr-merge
+      - check-success=buildkite/elastic-agent
+      - check-success=CLA
 pull_request_rules:
   - name: self-assign PRs
     conditions:
@@ -48,7 +49,6 @@ pull_request_rules:
       - -merged
       - -closed
       - conflict
-      - author=apmmachine
       - label=automation
     actions:
       close:
@@ -61,16 +61,14 @@ pull_request_rules:
         - merged
         - closed
       - and:
-        - label=automation
-        - head~=^update-go-version
+        - head~=^updatecli.*
         - files~=^\.go-version$
     actions:
       delete_head_branch:
   - name: automatic approval for mergify pull requests with changes in bump-rules
     conditions:
       - author=mergify[bot]
-      - check-success=fleet-ci/pr-merge
-      - label=automation
+      - check-success=buildkite/elastic-agent
       - files~=^\.mergify\.yml$
       - head~=^add-backport-next.*
     actions:
@@ -79,21 +77,28 @@ pull_request_rules:
         message: Automatically approving mergify
   - name: automatic squash and merge with success checks and the files matching the regex ^.mergify.yml is modified.
     conditions:
-      - check-success=fleet-ci/pr-merge
-      - label=automation
+      - check-success=buildkite/elastic-agent
       - files~=^\.mergify\.yml$
       - head~=^add-backport-next.*
       - "#approved-reviews-by>=1"
     actions:
       queue:
         name: default
+  - name: delete upstream branch for mergify backports
+    conditions:
+      - or:
+        - merged
+        - closed
+      - and:
+        - head~=^mergify/bp/.*
+    actions:
+      delete_head_branch:
   - name: delete upstream branch with changes on ^.mergify.yml that has been merged or closed
     conditions:
       - or:
         - merged
         - closed
       - and:
-        - label=automation
         - head~=^add-backport-next.*
         - files~=^\.mergify\.yml$
     actions: