fixup! configure renovate for version branches

Author: nzbr

.github/renovate.json5

@@ -6,5 +6,17 @@
   nix: {
     enabled: true,
   },
-  packageRules: [],
+  lockFileMaintenance: {
+    enabled: true,
+    extends: ["schedule:weekly"],
+    automerge: true,
+  },
+  packageRules: [
+    {
+      matchBaseBranches: ["/^release-.+$/"],
+      matchManagers: ["nix"],
+      matchUpdateTypes: ["major"],
+      enabled: false,
+    },
+  ],
 }