Update zip requirement from 0.6 to 2.1

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@v0.6.4...v2.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -38,7 +38,7 @@ futures-util = { version = "0.3", default-features = false, features = [
     "std",
 ] }
 iso_currency = { version = "0.4", features = ["with-serde"] }
-zip = "0.6"
+zip = "2.1"
 base64 = "0.22"
 google-authenticator = { version = "0.4", optional = true }
 prost = { version = "0.12", optional = true }