build(deps): bump zeroize from 1.5.7 to 1.6.0 (#359)

Bumps [zeroize](https://github.com/RustCrypto/utils) from 1.5.7 to 1.6.0.
- [Release notes](https://github.com/RustCrypto/utils/releases)
- [Commits](RustCrypto/utils@zeroize-v1.5.7...zeroize-v1.6.0)

---
updated-dependencies:
- dependency-name: zeroize
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -20,7 +20,7 @@ cipher = "0.4.2"
 cpufeatures = "0.2"
 
 [target.'cfg(not(all(aes_armv8, target_arch = "aarch64")))'.dependencies]
-zeroize = { version = "1.5.6", optional = true, default_features = false }
+zeroize = { version = "1.6.0", optional = true, default_features = false }
 
 # TODO(tarcieri): unconditionally enable `aarch64` feature when MSRV is 1.59
 [target.'cfg(all(aes_armv8, target_arch = "aarch64"))'.dependencies]