fix: detect our requirements

Author: Lulalaby

renovate.json

@@ -6,10 +6,9 @@
     ":dependencyDashboard"
   ],
   "assigneesFromCodeOwners": true,
-  "packageRules": [
-    {
-      "matchManagers": ["pip_requirements"],
-      "matchFileNames": ["requirements/*.txt"]
-    }
-  ]
-}
+  "pip_requirements": {
+    "managerFilePatterns": [
+      "requirements/*.txt"
+    ]
+  }
+}