ci(mergify): upgrade configuration to current format

Author: mergify[bot]

.github/mergify.yml

@@ -1,15 +1,15 @@
 queue_rules:
   - name: dependabot
-    conditions:
-      - status-success=all-checks-passed
-
-pull_request_rules:
-  - name: dependabot
-    conditions:
+    queue_conditions:
       - status-success=all-checks-passed
       - base=main
       - author=dependabot[bot]
+    merge_conditions:
+      - status-success=all-checks-passed
+    merge_method: merge
+
+pull_request_rules:
+  - name: refactored queue action rule
+    conditions: []
     actions:
       queue:
-        method: merge
-        name: dependabot