Bump snap from 1.1.0 to 1.1.1 (#434)

Bumps [snap](https://github.com/BurntSushi/rust-snappy) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/BurntSushi/rust-snappy/releases)
- [Commits](BurntSushi/rust-snappy@1.1.0...1.1.1)

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

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