Add Renovate 'lock file maintenance' config

Author: intgr

.github/renovate.json

@@ -0,0 +1,13 @@
+{
+  "dependencyDashboard": false,
+  "lockFileMaintenance": {
+    "enabled": true,
+    "schedule": ["* 3-4 * * *"],
+    "automerge": true
+  },
+  "packageRules": [
+    {
+      "enabled": false
+    }
+  ]
+}

.github/workflows/test.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - "renovate/**"
   pull_request:
   workflow_dispatch:
   schedule: