Add renovate.json config following the approved strategy

Co-authored-by: NullVoxPopuli <[email protected]>

Author: Copilot

renovate.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "automerge": false,
+  "dependencyDashboard": true,
+  "schedule": ["every weekend"],
+  "minimumReleaseAge": "10 days",
+  "packageRules": [
+    {
+      "description": "Batch all @babel packages into a single PR",
+      "matchPackagePrefixes": ["@babel/"],
+      "groupName": "babel"
+    }
+  ]
+}