Revert "[skip-ci] Disable renovate" (#482)

* Revert "[skip-ci] Disable renovate (#480)"

This reverts commit a172f65.

* [skip-ci] Update renovate.json

Author: jsanz

.buildkite/pull-requests.json

@@ -1,7 +1,6 @@
 {
     "jobs": [
         {
-            "enabled": false,
             "repoOwner": "elastic",
             "repoName": "ems-file-service",
             "enabled": true,
@@ -11,7 +10,9 @@
                 "admin",
                 "write"
             ],
-            "allowed_list": [],
+            "allowed_list": [
+                "dependabot"
+            ],
             "build_on_commit": true,
             "build_on_comment": true,
             "trigger_comment_regex": "^(?:(?:buildkite\\W+)?(?:build|test)\\W+(?:this|it))",

renovate.json

@@ -1,6 +1,7 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "enabled": false,
+  "enabled": true,
+  "minimumReleaseAge": "14 days",
   "extends": [
     "github>elastic/renovate-config"
   ]