Merge pull request 'Configure Renovate' (#25) from renovate/configure into main

Reviewed-on: https://git.wxs.ro/actions/claude-code-action/pulls/25

renovate.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "local>renovate/renovate-config"
+  ]
+}