chore: fix copyright header for new files to use current year only

Signed-off-by: Miguel Martinez <miguel@chainloop.dev>

Author: migmartri

CLAUDE.md

@@ -264,7 +264,7 @@ Code reviews are required for all submissions via GitHub pull requests.
 - when adding new inedexes, make sure to update the generated sql migraiton files and make them CREATE INDEX CONCURRENTLY and set -- atlas:txmode none at the top
 - after updating protos, make sure to run `buf format -w`
 - Please avoid sycophantic commentary like ‘You’re absolutely correct!’ or ‘Brilliant idea!’
-- For each file you modify, update the license header so the last year is the current year. For example, `Copyright 2023` becomes `Copyright 2023-2026`. If it already ends with the current year, no change needed. If there's no license header, create one with the current year.
+- For each file you modify, update the license header so the last year is the current year. For example, `Copyright 2023` becomes `Copyright 2023-2026`. If it already ends with the current year, no change needed. New files should use only the current year (e.g., `Copyright 2026`), not a range.
 - if you add any new dependency to a constructor, remember to run wire ./...
 - when creating PR message, keep it high-level, what functionality was added, don't add info about testing, no icons, no info about how the message was generated.
 - app/controlplane/api/gen/frontend/google/protobuf/descriptor.ts is a special case that we don't want to upgrade, so if it upgrades, put it back to main

app/controlplane/pkg/biz/apitoken_stale_revoker.go

@@ -1,5 +1,5 @@
 //
-// Copyright 2025-2026 The Chainloop Authors.
+// Copyright 2026 The Chainloop Authors.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.