chore: Use koki-develop/ghats preset

Author: koki-develop

.github/renovate.json

@@ -1,22 +1,7 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": ["github>koki-develop/renovate-config"],
-  "customManagers": [
-    {
-      "customType": "regex",
-      "fileMatch": ["^\\.github/workflows/actions\\.json$"],
-      "versioningTemplate": "semver",
-      "datasourceTemplate": "github-releases",
-      "matchStrings": ["\"(?<depName>[^\"]+)\": \"(?<currentValue>[^\"]+)\""]
-    },
-    {
-      "customType": "regex",
-      "fileMatch": ["^\\.github/workflows/actions-lock\\.json$"],
-      "versioningTemplate": "semver",
-      "datasourceTemplate": "github-releases",
-      "matchStrings": [
-        "\"(?<depName>.+?)@(?<currentValue>.+?)\": \"(?<currentDigest>[a-f0-9]{40})\""
-      ]
-    }
+  "extends": [
+    "github>koki-develop/renovate-config",
+    "github>koki-develop/ghats"
   ]
 }