feat: introduce renovatebot

renovate.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "dependencyDashboard": true,
+  "gitSubmodule": {
+    "enabled": false
+  },
+  "schedule": ["before 6am on Monday"]
+}