ci: Use windows-2022 runner, the last image with VS 2022 The windows-2025 label now also serves the windows-2025-vs2026 image, so VS 2022 is gone from both it and windows-latest. windows-2022 is the last hosted image shipping the v143 toolset, which keeps the published archives ABI-compatible with previous releases. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>