feat: update mergify.yaml config

Author: aldoborrero

.mergify.yml

@@ -4,13 +4,35 @@ queue_rules:
   - name: default
     queue_conditions:
       - base=main
-      - label~=merge-queue|dependencies
+      - label~=merge-queue|dependencies|automated
     merge_conditions:
       - check-success=buildbot/nix-build
     merge_method: rebase
 
 pull_request_rules:
+  - name: automatic merge for documentation PRs
+    conditions:
+      - base=main
+      - label=documentation
+      - label=automated
+      - check-success=buildbot/nix-build
+    actions:
+      merge:
+        method: rebase
+
+  - name: merge dependency updates using the merge queue
+    conditions:
+      - base=main
+      - label=dependencies
+      - label=automated
+    actions:
+      queue:
+        name: default
+
   - name: merge using the merge queue
-    conditions: []
+    conditions:
+      - base=main
+      - label=merge-queue
     actions:
       queue:
+        name: default