fix header check

Author: twishabansal

.licenserc.yaml

@@ -16,7 +16,7 @@ header:
   license:
     spdx-id: "Apache-2.0"
     copyright-owner: "Google LLC"
-    copyright-year: "2025"
+    copyright-year: "202[5-6]"
   paths-ignore:
     - "skills/**"