Bump syn from 1.0.79 to 1.0.80 (#847)
Bump syn from 1.0.79 to 1.0.80 (#847)

Bumps [syn](https://github.com/dtolnay/syn) from 1.0.79 to 1.0.80.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.79...1.0.80)

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

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Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
xd009642/tarpaulin,xd009642/tarpaulin