add renovate config

config.js

@@ -0,0 +1,8 @@
+module.exports = {
+    "endpoint": "https://git.schulze.network/api/v1",
+    "gitAuthor": "Renovate Bot <renovatebot@schulze.network>",
+    "platform": "gitea",
+    "onboardingConfigFileName": "renovate.json",
+    "autodiscover": true,
+    "optimizeForDisabled": true,
+};