ci(Mergify): configuration update

Signed-off-by: 梦境迷离 <[email protected]>

.mergify.yml

@@ -0,0 +1,25 @@
+pull_request_rules:
+  - name: assign and label scala-steward's PRs
+    conditions:
+      - author=scala-steward
+    actions:
+      assign:
+        users: ["@bitlap/rolls"]
+      label:
+        add: ["type: dependencies"]
+  - name: label scala-steward's breaking PRs
+    conditions:
+      - author=scala-steward
+      - "body~=(labels: library-update, early-semver-major)|(labels: sbt-plugin-update, early-semver-major)"
+    actions:
+      label:
+        add: ["type: breaking"]
+  - name: merge Scala Steward's PRs
+    conditions:
+      - author=scala-steward
+      - "body~=(labels: library-update, early-semver-minor)|(labels: library-update, early-semver-patch)|(labels: sbt-plugin-update, early-semver-minor)|(labels: sbt-plugin-update, early-semver-patch)|(labels: test-library-update)"
+      - "check-success=Java8"
+      - "check-success=Java11"      
+    actions:
+      merge:
+        method: squash