ci: configure mergify

.mergify.yml

@@ -0,0 +1,34 @@
+pull_request_rules:
+  - name: Auto-rebase if appropriately labeled
+    conditions:
+      - label=auto-update-rebase
+      - -draft
+      - -conflict
+    actions:
+      rebase:
+  - name: Auto-update with merge if appropriately labeled
+    conditions:
+      - label=auto-update-merge
+      - -draft
+      - -conflict
+    actions:
+      update:
+  - name: rebase-merge working updates
+    conditions:
+      - author=renovate[bot]
+      - label=dependencies
+      - -draft
+      - -conflict
+    actions:
+      merge:
+        method: rebase
+  - name: ask to resolve conflict
+    conditions:
+      - conflict
+    actions:
+      comment:
+        message: |
+          Hi @{{author}}! :wave:
+          I could not help but notice that this pull request has conflicts. :confounded:
+          Could you fix it? :wrench:
+          Thank you! :pray: