Fix licensing CI failure from stale header year in problem_cache.hpp

[Copilot]

Motivation

The licensing GitHub Actions job failed because tools/check_stamped.py detected a stale license year in src/targets/gpu/include/migraphx/gpu/problem_cache.hpp. This PR updates that header stamp to satisfy the repository’s current-year licensing check.

Technical Details

• Root cause
  • check_stamped.py reported Wrong year in license files for:
    • src/targets/gpu/include/migraphx/gpu/problem_cache.hpp
• Targeted fix
  • Updated the license header year range in that file from 2015-2024 to 2015-2026.
• Change snippet

  - * Copyright (c) 2015-2024 Advanced Micro Devices, Inc. All rights reserved.
  + * Copyright (c) 2015-2026 Advanced Micro Devices, Inc. All rights reserved.

Changelog Category

Add a CHANGELOG.md entry for any option other than Not Applicable

• • Added: New functionality.
• • Changed: Changes to existing functionality.
• • Removed: Functionality or support that has been removed. (Compared to a previous release)
• • Optimized: Component performance that has been optimized or improved.
• • Resolved Issues: Known issues from a previous version that have been resolved.
• • Not Applicable: This PR is not to be included in the changelog.