Release v0.15.0-preview.3

What's Changed

• fix(patch): cherry-pick fe1bfc6 to release/v0.15.0-preview.2-pr-12989 to patch version v0.15.0-preview.2 and create version 0.15.0-preview.3 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/12990

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.15.0-preview.2...v0.15.0-preview.3