Update zip requirement from 1.1 to 2.1 (#205)

Updates the requirements on [zip](https://github.com/zip-rs/zip2) to permit the latest version.
- [Release notes](https://github.com/zip-rs/zip2/releases)
- [Changelog](https://github.com/zip-rs/zip2/blob/master/CHANGELOG.md)
- [Commits](zip-rs/zip2@1.1.0...v2.1.0)

---
updated-dependencies:
- dependency-name: zip
  dependency-type: direct:production
...

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

Author: dependabot[bot]

plotly_kaleido/Cargo.toml

@@ -22,5 +22,5 @@ dunce = "1.0.2"
 directories = ">=4, <6"
 
 [build-dependencies]
-zip = "1.1"
+zip = "2.1"
 directories = ">=4, <6"