build(deps): bump open from 1.5.1 to 1.6.0 (#58)

Bumps [open](https://github.com/Byron/open-rs) from 1.5.1 to 1.6.0.
- [Release notes](https://github.com/Byron/open-rs/releases)
- [Changelog](https://github.com/Byron/open-rs/blob/master/changelog.md)
- [Commits](Byron/open-rs@v1.5.1...v1.6.0)

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

Author: dependabot[bot]

Cargo.lock

@@ -20,7 +20,7 @@ exclude = [
 [dependencies]
 regex = "1"
 structopt = "0.3"
-open = "1.5"
+open = "1.6"
 git2 = "0.13"
 log = "0.4"
 flexi_logger = "0.17"