Update renovate config to bump versions but avoid pins

renovate.json

@@ -1,5 +1,11 @@
 {
   "extends": [
     "config:base"
+  ],
+  "packageRules": [
+    {
+      "packageNames": ["automattic/jetpack-autoloader"],
+      "rangeStrategy": "bump"
+    }
   ]
 }