Renovate: Use local preset path.
diff --git a/renovate.json b/renovate.json
index 4714ea4..09e3ef5 100644
--- a/renovate.json
+++ b/renovate.json
@@ -1,3 +1,3 @@
 { "$schema": "https://docs.renovatebot.com/renovate-schema.json"
-, "extends": ["https://gitlab.benkard.de/mulk/renovate-config"]
+, "extends": ["local>mulk/renovate-config"]
 }