ci(mergify): point to the shared configuration

.mergify.yml

@@ -1,37 +1 @@
-pull_request_rules:
-  - name: Auto-update with merge if appropriately labeled
-    conditions:
-      - label=auto-update-merge
-      - -draft
-      - -conflict
-    actions:
-      update:
-  - name: rebase-merge working updates
-    conditions:
-      - and:
-        - or: &authors_are_bots
-          - author=renovate[bot]
-          - author=dependabot[bot]
-        - and:
-          - or:
-            - check-success=ci-cd / success
-            - check-neutral=ci-cd / success
-            - check-skipped=ci-cd / success
-          - "#review-threads-unresolved=0"
-          - "#commits-behind=0"
-      - label=dependencies
-      - -draft
-      - -conflict
-    actions:
-      merge:
-        method: rebase
-  - name: ask to resolve conflict
-    conditions:
-      - conflict
-    actions:
-      comment:
-        message: |
-          Hi @{{author}}! :wave:
-          This pull request has conflicts :confounded:
-          Could you fix it? :wrench:
-          Thank you! :pray:
+extends: mergify-config