chore: enable mergify (#1009)

* add config for mergify

* enable security dependecies for v2.0.x

.github/dependabot.yml

@@ -15,5 +15,15 @@ updates:
       interval: weekly
     target-branch: "main"
     open-pull-requests-limit: 10
+    labels:
+      - dependencies
+
+  - package-ecosystem: gomod
+    directory: "/"
+    schedule:
+      interval: daily
+    target-branch: "release/v2.0.x"
+    # Only allow automated security-related dependency updates on release branches.
+    open-pull-requests-limit: 0
     labels:
       - dependencies

.mergify.yml

@@ -0,0 +1,20 @@
+defaults:
+  actions:
+    backport:
+      assignees:
+        - "{{ author }}"
+
+queue_rules:
+  - name: default
+    conditions:
+      - "#approved-reviews-by>1"
+
+pull_request_rules:
+  - name: Backport patches to the release/v2.0.x branch
+    conditions:
+      - base=main
+      - label=A:backport/v2.0.x
+    actions:
+      backport:
+        branches:
+          - release/v2.0.x