chore(ci): add renovate config

Author: lhjt

.github/dependabot.yml

@@ -0,0 +1,12 @@
+{
+  "extends": ["config:base"],
+  "lockFileMaintenance": { "enabled": true, "automerge": true },
+  "labels": ["dependencies"],
+  "packageRules": [
+    {
+      "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
+      "automerge": true,
+      "automergeType": "branch"
+    }
+  ]
+}