Release v0.12.5

What's Changed

• test(sdk): simplify integration tests for reliability by @qwen-code-ci-bot in #2410
• chore: bump version to 0.12.5 by @qwen-code-ci-bot in #2422
• fix(shell): resolve Windows encoding issues for non-ASCII output by @tanzhenxin in #2423

Full Changelog: v0.12.4...v0.12.5