build(deps): bump syn from 2.0.72 to 2.0.74 (#2986)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.72 to 2.0.74.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](dtolnay/syn@2.0.72...2.0.74)

---
updated-dependencies:
- dependency-name: syn
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kai <7630809+Kailai-Wang@users.noreply.github.com>