chore: use renovate preset config

renovate.json

@@ -1,23 +1,4 @@
 {
-  "extends": ["config:base"],
-  "regexManagers": [
-    {
-      "fileMatch": ["^Makefile$"],
-      "matchStrings": [
-        "# renovate: datasource=(?<datasource>\\S+) depName=(?<depName>\\S+)( versioning=(?<versioning>.*?))?\\n.*?_VERSION := (?<currentValue>.*)\\s"
-      ]
-    }
-  ],
-  "packageRules": [
-    {
-      "datasources": ["github-releases"],
-      "paths": ["Makefile"],
-      "groupName": "hugo theme",
-      "packagePatterns": ["^thegeeklab"],
-      "automerge": true
-    }
-  ],
-  "droneci": {
-    "enabled": false
-  }
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["github>thegeeklab/renovate-presets"]
 }