chore: Constrain Renovate to Go 1.24

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mromaszewicz

renovate.json

@@ -2,5 +2,10 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "local>oapi-codegen/renovate-config"
-  ]
+  ],
+  "gomod": {
+    "constraints": {
+      "go": "1.24"
+    }
+  }
 }